2019 International Conference on Applied and Engineering Mathematics (ICAEM)最新文献

{"title":"Coding and velocity profile analysis of an elliptical exhaust nozzle","authors":"Ammar Hussain Farooqi, Syed Irtiza Ali Shah","doi":"10.1109/ICAEM.2019.8853758","DOIUrl":"https://doi.org/10.1109/ICAEM.2019.8853758","url":null,"abstract":"The thrust of an aircraft or rocket engine is largely dependent upon the momentum imparted to the products of combustion by discharging them through an exhaust nozzle. The design of an exhaust nozzle has special importance in determining the thrust and performance of an aircraft / rocket. In recent years, the design of the exhaust nozzle has received considerable attention as it directly impacts the overall performance. The aim of this paper is to study the behavior of a velocity field at the exit cross section of an elliptical nozzle. In this regard, an algorithm has been developed using the governing equations to compute the velocity at the exit of an elliptic exhaust nozzle for various aspect ratios and widths. The algorithm also provides the maximum Mach number at the exit. Subsequently plotting of Mach number contours for a range of aspect ratios is carried out. Flow is assumed to be moving under the influence of a pressure gradient. The analysis of velocity profile at exit plane of an elliptical nozzle in subsonic, supersonic and hypersonic regime is carried out which provides an understanding of the behavior of flow with variation in aspect ratio or width of an elliptical exhaust nozzle. The velocity profile obtained from algorithm for different aspect ratio and width is then compared to find the optimal design. The criteria for the optimal design of an elliptical exhaust nozzle is delivering the maximum exhaust velocity and thus thrust which is of prime importance in the design of an aircraft exhaust nozzle. This exhaust velocity, leading to thrust, is dependent mainly on the configuration of the nozzle walls i.e. geometry of the exhaust nozzle. In future, experimental validation of these results is suggested using the wind tunnel and also through computational techniques. The same approach can be used to study exhaust nozzles of varying cross sections for example triangular, square, rectangular, circular etc. The study will help in the development of optimized aircraft exhaust nozzles for future advanced aircraft.","PeriodicalId":304208,"journal":{"name":"2019 International Conference on Applied and Engineering Mathematics (ICAEM)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129695255","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":"CFD Analysis of NACA-0012 Airfoil with Various Porous Gurney Flap Geometries","authors":"M. Iqbal, Syed Irtiza Ali Shah, Ali Hassan","doi":"10.1109/ICAEM.2019.8853695","DOIUrl":"https://doi.org/10.1109/ICAEM.2019.8853695","url":null,"abstract":"The use of Gurney flap for improving lift to drag ratio of airfoils has remained a success over the past years. Although its implementation on airfoil successfully enhances lift characteristics, however, it also creates additional drag by hindering the flow. Therefore, minimization of its drag penalty is an active area of research for enhancing its effectiveness. Techniques such as modifications in its shape, size and placement position has been incorporated in its design. These techniques lower the surplus drag of Gurney flap but it is not a significant decrease. Thus keeping the need of hour in view, this endeavor has been put in to minimize the drag penalty imposed on the installation of gurney flap. A shape modification has been analyzed and successfully proposed to maximize lift to drag ratio of the airfoil with gurney flap. The idea is to introduce the porosity in the gurney flap so as to minimize the stagnation pressure loss. The flow patterns and aerodynamic parameters have been evaluated and plotted using CFD techniques in ANSYS FLUENT software. The analysis has been done with various porosity levels on the flap height of 0.5, 1, 1.5, 2 and 3% of the chord. The results and the characteristics behavior have been compared and verified from with published results. From analysis it has been found that the most effective gurney flap configration is of height equal to 2-3% of the chord with 20% porosity. This analysis could be used as a guideline in development of better and effective design of Gurney Flap being used in aerospace industry.","PeriodicalId":304208,"journal":{"name":"2019 International Conference on Applied and Engineering Mathematics (ICAEM)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130243288","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":"Generalization of Inequalities Analogous to Preinvex Functions via Extended Generalized Mittag-Leffler Functions","authors":"S. Rashid, A. Akdemir, M. Noor, K. Noor","doi":"10.1109/ICAEM.2019.8853807","DOIUrl":"https://doi.org/10.1109/ICAEM.2019.8853807","url":null,"abstract":"In this article, we establish new Hadamard-type and the Fejer-Hadamard-type inequalities for the extended generalized fractional integral operator involving the extended generalized Mittag-Leffler functions for preinvexity and m-preinvexity. These results include several inequalities corresponding to special cases of the extended generalized Mittag-Leffler functions. The known results can be obtained as applications of our results.","PeriodicalId":304208,"journal":{"name":"2019 International Conference on Applied and Engineering Mathematics (ICAEM)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131352396","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":"Some new exact solutions to fractional potential Korteweg-de Vries equation","authors":"U. Farooq, N. Ahmed","doi":"10.1109/ICAEM.2019.8853702","DOIUrl":"https://doi.org/10.1109/ICAEM.2019.8853702","url":null,"abstract":"The objective of this paper is to find the exact soliton solutions to a nonlinear fractional partial differential equation (known as fractional potential Korteweg-de Vries (fp-KdV) equation). We have made use of complex wave transformation with Jumarie's Riemann-Liouville (R-L) derivative to convert fp-KdV into corresponding fractional ODE. This process is a part of fractional sub-equation method (FSEM) that we have implemented to solve the equation at hand. Using this method, we have obtained five different types of exact soliton solutions i.e. trigonometric, hyperbolic and rational. These solutions are novel and would help us to have a deeper understanding of the phenomenon governed by fp-KdV equation.","PeriodicalId":304208,"journal":{"name":"2019 International Conference on Applied and Engineering Mathematics (ICAEM)","volume":"8 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131751663","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":"Implementation of ball and beam system using classical and advanced control techniques","authors":"Shahid Latif, E. Muhammad, Umair Naeem","doi":"10.1109/ICAEM.2019.8853822","DOIUrl":"https://doi.org/10.1109/ICAEM.2019.8853822","url":null,"abstract":"The Ball and Beam System (B&BS) is an extensively used experimental setup to study, verify and to compare the performance of the conventional and advanced control techniques. The main thrust of this research is to develop a low cost and user-friendly model of the B&BS. First, a detailed mathematical model has been developed by considering the physical parameters of the system. This research has produced two controllers for stabilizing the designed B&BS setup. The first controller is a two degrees of freedom (2DOF) Proportional Integral Derivative (PID) controller. Its performance has been evaluated through MATLAB simulations and real-time experiments. The second one is a Fuzzy Logic controller. In this controller, Mamdani inference engine is used due to its intuitiveness, widespread acceptance and suitability to human-input. Triangular membership functions are selected for fuzzification process because of its ease in implementation. The whole system was fabricated using readily available materials and components. The real-time experimental data accruing from this system was used to validate the simulation results.","PeriodicalId":304208,"journal":{"name":"2019 International Conference on Applied and Engineering Mathematics (ICAEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130967308","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":"Blockchain Based Anonymous Voting System Using zkSNARKs","authors":"Malik Hamza Murtaza, Zahoor Ahmed Alizai, Zubair Iqbal","doi":"10.1109/ICAEM.2019.8853836","DOIUrl":"https://doi.org/10.1109/ICAEM.2019.8853836","url":null,"abstract":"This paper presents a very simple approach for a fair electronic voting system that guarantees anonymity, coercion resistance, correctness, easy tallying, eligibility, fairness, high availability, integrity, robustness, voter authentication, voter confidentiality, vote verifiability and public verifiability of any electoral process. These properties are achieved using blockchain technology. A relatively new type of zero knowledge proof known as zkSNARKs has been used to provide voter unlinkability.","PeriodicalId":304208,"journal":{"name":"2019 International Conference on Applied and Engineering Mathematics (ICAEM)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123885379","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":"Hate Speech Detection using Fusion Approach","authors":"Muhammad Sajjad, Fatima Zulifqar, Muhammad Usman Ghani Khan, Muhammad Azeem","doi":"10.1109/ICAEM.2019.8853762","DOIUrl":"https://doi.org/10.1109/ICAEM.2019.8853762","url":null,"abstract":"Detection of hate speech in user-generated online content has become an issue of increasing importance in recent years and is discerning for applications such as disputed event identification and sentiment analysis. Text classification for online content is a bit challenging task due to the natural language complexity and hastily generated online user microblogs including a plethora of informality and mistakes. This work introduces a system to classify tweets in three categories (i.e., racism, sexism and none). In our classification strategy, we integrate deep features extracted from Convolutional Neural Network(CNN) trained on semantic word embedding with state-of-the-art syntactic and word n-gram features. We perform comprehensive experiments on a standard dataset containing 16k manually annotated tweets. Our proposed approach outperform all other state-of-the-art approaches with a significant increase in accuracy.","PeriodicalId":304208,"journal":{"name":"2019 International Conference on Applied and Engineering Mathematics (ICAEM)","volume":"338 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123060657","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}