Volume 5: Engineering Education最新文献

{"title":"The Efficacy of Spreadsheet Modelling As an Alternative Means of Teaching Process Simulation","authors":"Aaron J. Armstrong, S. Kumpaty","doi":"10.1115/imece2019-11926","DOIUrl":"https://doi.org/10.1115/imece2019-11926","url":null,"abstract":"\u0000 Spreadsheet based simulation has many advantages over the pre-programmed simulation applications more commonly used in teaching simulation in undergraduate courses. They are almost universally ubiquitous in business settings around the world. There is near certainty that students will have access to them after graduation since spreadsheets are a standard business tool used by nearly all engineers [1]. In addition, spreadsheets are already present within most standard operating systems. This means that there will be no need to buy or get approvals from Information Technology software committees or other managerial roadblocks. As an alternative to this, there are now free OpenOffice and LibreOffice spreadsheets available on most platforms which make their access effectively universal.\u0000 Aside from their excellent availability, spreadsheets are an extremely capable learning tool for best practices in process simulation. Most engineering students are arriving at college with a good set of spreadsheet skills from their primary education and then the rest tend to pick it up early as underclassmen [2]. Spreadsheet simulation is easy to explain and generally very simple to debug. Although the now mainly antiquated code-based simulation packages used to offer these same advantages, they have now been largely replaced by more graphically oriented packages which depend in part on subtle mouse clicks and sometimes complex sub-menu structures. In addition, spreadsheets offer easily accessible native analysis and excellent graphing capabilities.\u0000 Several advantages and potential disadvantages of spreadsheet simulation are presented in comparison to contemporary process simulation. Several simulation projects are then discussed related to Markovian processes including stochastic scatter patterns, sequential random object movement, multi-server queueing processes, dynamic intercept models, complex traffic and evacuation models, and Susceptible-Infected-Removed infections design simulations were taught using spreadsheet simulation.","PeriodicalId":191997,"journal":{"name":"Volume 5: Engineering Education","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122886061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a Virtual Lab in Assistance of a Fluid Mechanics Laboratory Instruction","authors":"Yitong Zhao, E. Flanagan, Hamza Abbasi, K. Black, Xin Wang, Andres Cardona","doi":"10.1115/imece2019-10540","DOIUrl":"https://doi.org/10.1115/imece2019-10540","url":null,"abstract":"\u0000 Physical laboratory experiments are built to provide students with hands-on opportunities and have long been crucial for engineering training. However, due to the rapid growth in number of enrollments, limited and shared space, undergraduate students have experienced an increasing difficulty gaining valuable hands on experience in the lab. While traditional lab should never be abandoned, adding virtual labs to assist with it could benefit students without the limitation of enrollment capacity or lab availability. In this paper, we discussed a pilot study of developing a virtual fluid mechanics laboratory to supplement existing physical lab exercises.\u0000 The virtual lab was designed to enrich students’ lab experience, stimulate interests, and bring more individual exercise time. It was developed to contain two components: a virtual lab tour and a virtual reality (VR) simulated pump experiment. The virtual tours served as a pre-lab instruction tool that provided students with an overview of the fluid mechanics lab. The VR pump experiment replicated the physical experience of performing the physical lab.\u0000 Preliminary feedbacks were positive for both components of the virtual lab. Students considered that the virtual tours were very informative and useful, while that the VR pump lab was intuitive and time-saving. This proved that with realistic lab simulations, the virtual lab had great potential to provide students more flexibility to perform hands-on experiment and to develop technical acumen outside of the physical classroom. Further improvement was discussed to implement in the next stage to create more immersive experience in assistance of the lab instruction.","PeriodicalId":191997,"journal":{"name":"Volume 5: Engineering Education","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126258040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Use of Qualitative Data Analysis for the Evaluation of Design Ethnography Training Among Undergraduate Engineering Students","authors":"Heather Lai, T. Eaton","doi":"10.1115/imece2019-10494","DOIUrl":"https://doi.org/10.1115/imece2019-10494","url":null,"abstract":"\u0000 While qualitative data analysis (QDA) is an established method in education research, QDA is less common in engineering research and may be a challenge for engineering faculty not formally trained in qualitative methods to apply it in engineering education. The following describes the collaborative effort between an engineering design instructor and an anthropologist who used QDA to evaluate the implementation of design ethnography training in a third-year biomedical engineering design course. In their partnership, the study investigators examined student perspectives regarding design ethnography training and how such training in an engineering curriculum may prepare students for careers in biomedical design.\u0000 Data for the study consisted of reflective essays (N = 42) that the students completed following two primary exercises dedicated to design ethnography skills training. Investigators input typed and anonymized text files of the student essays into ATLAS.ti X7, a qualitative data analysis software program, for qualitative content analysis. QDA was conducted using the constant comparison method to inductively identify pertinent themes. Throughout the QDA process, the investigators routinely met to discuss, merge and interpret themes as needed. Upon the finalization of themes, researchers re-reviewed the data using the finalized codebook (a list of themes and their definitions) for coding reliability. This regular contact was invaluable for the engineering instructor, providing instruction on the process necessary for proper application of QDA.\u0000 The unique partnership between investigators offered the engineering design instructor the opportunity to evaluate engineering student perceptions of a new curriculum implementation in an in-depth manner not commonly attempted in engineering education. Results from the QDA showed that the incorporation of design ethnography skills training into an engineering design curriculum increased student awareness of the value of ethnography in understanding user environments while offering engineering students the opportunity to develop better observation skills. This study was successful not only in demonstrating efficacy of design ethnography training among undergraduate engineering students, but it also serves as an example of how QDA may be applied by engineering instructors for the evaluation of student experience and work in engineering education.","PeriodicalId":191997,"journal":{"name":"Volume 5: Engineering Education","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125786718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multidisciplinary Problem Based Learning: Venipuncture Practice Arm Research","authors":"P. Doan, C. Gomez","doi":"10.1115/imece2019-11978","DOIUrl":"https://doi.org/10.1115/imece2019-11978","url":null,"abstract":"\u0000 Community colleges need more avenues for undergraduate research during their first two years in higher education but face challenges to building robust research namely the limited time frame students are at a community college and the limited resources for research. To maximize the limited resources and the educational experience for the students, multidisciplinary projects within the community college environment provide both engineering and science students with research opportunities that fit the schedule of a working student, allow interaction between disciplines, provide team-based environments, and foster life-long learning. This paper describes 1) a multidisciplinary project for honor chemistry and engineering students; introduction to engineering students and engineering graphics students in the development of a venipuncture practice arm for nursing students practicing venipuncture techniques in the simulation lab. 2) the institutional supports that promote the development of collaborative and multidisciplinary research projects and 3) recommendations for other community colleges interested in developing multidisciplinary research opportunities throughout their engineering and science curriculums.","PeriodicalId":191997,"journal":{"name":"Volume 5: Engineering Education","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132169065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dependence of Measuring Instrument Eccentricity and Tilt Error on the Four Mathematical Methods of Circularity Form Errors","authors":"Suhash Ghosh, C. Sahay, Poorna Pruthvi Chandra Malempati, Swetabh C. Singh","doi":"10.1115/imece2019-11954","DOIUrl":"https://doi.org/10.1115/imece2019-11954","url":null,"abstract":"\u0000 In precision machining of cylindrical parts, the measurement and evaluation of circularity is an indispensable component to quantify form tolerance. Of all the methods of measuring these form errors, the most precise is the one with accurate spindle/turntable type measuring instrument. On the instrument, the component is rotated on a highly accurate spindle which provides an imaginary circular datum. The workpiece axis is aligned with the axis of the spindle by means of a centering and tilt adjustment leveling table. Based on reference circles, this paper focuses on the four modeling methods of roundness, namely, (1) Least Squares Circle (LSC), (2) Maximum Inscribed Circle (MIC), (3) Minimum Circumscribed Circle (MCC) and (4) Minimum Zone or Minimum Radial Separation (MRS) Circles. These methods have been explained in author’s previous article in the context of their implications on design applications, advantages and disadvantages. In this article, the authors have investigated the dependence of these mathematical methods based circularity form error on instrument’s centering error (also known as eccentricity) and tilt error. Some intriguing results were observed for the highly nonlinear relationship of machine’s centering/tilt error with circularity results outside its useful linear region (50–600 μin for this specific machine used in this investigation). Further, the linear and nonlinear relationship was mapped within the effective boundaries of eccentricity settings to investigate the best and worst methods of circularity measurements that are susceptible to instrument errors. Very high and low machine eccentricity settings in its nonlinear regions were not accurately compensated by the machine in circularity results processing. In this study, a master part with different circular and cylindrical features was studied with varying levels of preset instrument eccentricity and tilt errors. Off the four methods, MRS reported the least circularity results. The other three methods didn’t provide any predictable trend. Circularity results were observed to differ up to 35% within these four methods. However, in this preliminary investigation, this maximum difference doesn’t appear to follow any predictable trend with varying machine eccentricities. This article also reinforces the significance of these parameters, and the way they should be understood and be incorporated into undergraduate and graduate engineering curriculum, and be taught as an improved toolkit to the aspiring engineers.","PeriodicalId":191997,"journal":{"name":"Volume 5: Engineering Education","volume":"834 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123012442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelling Buoy Motion at Sea","authors":"T. Rykkje, Tord Tørressen, Håvard Løkkebø","doi":"10.1115/imece2019-10437","DOIUrl":"https://doi.org/10.1115/imece2019-10437","url":null,"abstract":"\u0000 This project creates a model to assess the motion induced on a buoy at sea, under wave conditions. We use the Moving Frame Method (MFM) to conduct the analysis. The MFM draws upon concepts and mathematics from Lie group theory — SO(3) and SE(3) — and Cartan’s notion of Moving Frames. This, together with a compact notation from geometrical physics, makes it possible to extract the equations of motion, expeditiously. This work accounts for the masses and geometry of all components and for buoyancy forces and added mass. The resulting movement will be displayed on 3D web pages using WebGL. Finally, the theoretical results will be compared with experimental data obtained from a previous project done in the wave tank at HVL.","PeriodicalId":191997,"journal":{"name":"Volume 5: Engineering Education","volume":"32 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114019639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Important Educational Factors for Computational Fluid Dynamics When Teaching New Users How to Apply Commonly Employed Initial Set-Up Configuration Parameters for Airfoils","authors":"Hussein Al-Qarishey, R. Fletcher","doi":"10.1115/imece2019-11264","DOIUrl":"https://doi.org/10.1115/imece2019-11264","url":null,"abstract":"\u0000 Inflowing turbulence influences aerodynamic behaviors of the impacted geometries, and are important considerations for systems such as sailing vessels, wind turbines, ground vehicles, and aircraft. It is important to understand and evaluate the characteristic nature of this turbulence. Computational Fluid Dynamics (CFD) is now a foundational analytical instructional tool used to help educate both undergraduate and graduate engineering students on how predict and describe both boundary layer behavior and the resulting downstream turbulence. Increasing the predication accuracy of turbulence models, particularly at higher Reynolds number regimes remains a fundamental consideration in CFD analysis.\u0000 The work discussed here focuses on understanding how CFD simulations can be impacted by basic CFD approaches and configurations. Commonly use unstructured grids and incremental positive angles of attack around the well-studied NACA0012 airfoil were used to assess how these basic set-up parameters can influence CFD turbulence results. Navier-Stokes equations were solved for incompressible flow to assess downstream turbulence using the SST k-ω (two equation) turbulence model within ANSYS Fluent (SIMPLE solution method). Two airfoil configurations with respect to angle of attack (α) were of interested and studied, with one configuration defined as “fixed-position” and the second configuration defined as “changed-position”. Fixed-position refers to a single common airfoil/grid configuration and changing incoming Ux, Vy velocity vectors to yield different angle of attack (α) values. Changed-position refers to a utilizing a single Ux velocity vector and physically rotating the impacted airfoil in the computational field to yield different angles of attack.\u0000 A two-dimensional unsteady state SST k-ω turbulence model was used at a Reynolds number of 3.0 × 106. The resulting data from the system setup models studied here (fixed and changed-positions) were successfully validated by comparing the computed lift and drag coefficients at these varying α values to common values found in literature. Downstream pressure contours, along with Ux and Vy net-velocity contours at various distances from 1.5 cord lengths up to 12.0 cord lengths from the leading edge of the airfoil at incremental angles of attack were studied. The authors review how such variations in rudimentary approaches can impact the CFD downstream output results.","PeriodicalId":191997,"journal":{"name":"Volume 5: Engineering Education","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130879523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Verification and Validation of a Homogeneous Reaction Kinetics Model Using a Detailed H2-O2 Reaction Mechanism Versus Chemkin and Cantera","authors":"S. Alam, C. Depcik","doi":"10.1115/imece2019-10028","DOIUrl":"https://doi.org/10.1115/imece2019-10028","url":null,"abstract":"Increased black-box software use without adequate software literacy can lead to improper results and potentially disastrous consequences. Furthermore, such software is often expensive and comes with limited flexibility making it prohibitive for learning purposes. Therefore, this effort highlights the development of an adaptable, user customizable, and free open-source software tool to evaluate reaction kinetics in combustion models. Here, the software undergoes verification and validation to ensure proper operation over the intended domain of its application. The conceptual model is derived from the basic governing equations of thermodynamics simulating zero-dimensional constant pressure combustion with chemical kinetics based on a homogeneous hydrogen-oxygen reaction mechanism. Then, the computerized model is developed using a top-down programming technique for quick identification and elimination of coding errors. Operational validation occurs by comparing results with Chemkin and Cantera that reveals absolute and relative tolerances of 1E−12 and 1E−3, respectively, are sufficient for convergence at all specified initial conditions. In addition, the open-source software is computationally less intensive with average time savings of 33.69% and 48.88% versus Chemkin and Cantera, respectively. Subsequently, model results are time-shifted to the 50% fuel-burned mark and compared with experimental results for validation. This ensures that the created software is correct and useful for classroom instruction. Finally, the customizability of the open-source software instills confidence in students to develop custom chemical reaction mechanisms.","PeriodicalId":191997,"journal":{"name":"Volume 5: Engineering Education","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128310231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Positive Intelligence Education for Unleashing Student Potential","authors":"P. Tyagi","doi":"10.1115/imece2019-12032","DOIUrl":"https://doi.org/10.1115/imece2019-12032","url":null,"abstract":"\u0000 Student attitude towards learning is strongly dependent on the hidden traits and habits they develop during the growing up period. Based on circumstances many students live in an individualistic mindset and perceive rather permanent misconceptions about the surrounding and opportunities. This paper focuses on providing positive intelligence training to college student to equip them with the necessary knowledge to not only unleash their talent but also to enable other students to give the highest performance. This paper focuses on an experiment under which 22 students in the senior level design of energy system course were exposed to the fundamental aspects of positive intelligence. Every student was tasked to demonstrate the depth of understanding about the positive intelligence and then apply it to group members to understand the strength and weakness. Most of the students expressed satisfaction that they were able to understand their attitude and behavior that they found as an impediment in their progress. After positive intelligence training, several students exhibited an increased maturity level and many students expressed higher degree of empathy towards their team members.","PeriodicalId":191997,"journal":{"name":"Volume 5: Engineering Education","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127906517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Teaching Capstone Thermal Systems Design Using ANSYS ICEPAK Based Projects","authors":"K. Anderson","doi":"10.1115/imece2019-10099","DOIUrl":"https://doi.org/10.1115/imece2019-10099","url":null,"abstract":"\u0000 This paper describes the use of ANSYS ICEPAK software in teaching a senior level capstone thermal systems design course in a Mechanical Engineering curriculum. The use of ANSYS ICEPAK software tools in the thermal design course allows our undergraduates the preparation they need to become competitive and productive in today’s private industry sector. The paradigm of learn-by-doing adopted by the college is used in the thermal design course by exposing students to the use of ANSYS ICEPAK software in order to complete a design project in the thermal design course. The senior level capstone thermal design course is a three-unit semester course. Students are broken into teams and are tasked to solve a variety of thermal-fluid, heat transfer related design problem scenarios. The student teams are tasked to design an electronic systems thermal management system using PCBS, fans, heat sinks, heat pipes, etc. in order to meet a set of pre-defined requirements. In this manner, the use of the ICEPAK projects serves to build the soft skills (report writing and technical presentation) of the students. This paper will include examples of ANSYS ICEPAK based thermal design projects and methods of assessment and illustrations of how the thermal design course addresses the Mechanical Engineering program’s ABET objectives and outcomes related to senior design capstone design courses.","PeriodicalId":191997,"journal":{"name":"Volume 5: Engineering Education","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129705662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}