Volume 7: Fluids Engineering最新文献_第4页

Design of a Turbopiston Pump Guided by Computational Analysis 基于计算分析的涡轮活塞泵设计

Volume 7: Fluids Engineering Pub Date : 2019-11-11 DOI: 10.1115/imece2019-10636

Ting Wang, P. Rousset

引用次数: 0

Drag Reduction of Ground Vehicles Using Air-Injected Wheel Deflectors 使用空气注入式车轮偏转器的地面车辆减阻

Volume 7: Fluids Engineering Pub Date : 2019-11-11 DOI: 10.1115/imece2019-10454

Kaloki L. Nabutola, S. Boetcher

引用次数: 2

Finite Element Method for Fluid Flow in 3D Domains Containing Moving Interfaces 含运动界面三维域流体流动的有限元方法

Volume 7: Fluids Engineering Pub Date : 2019-11-11 DOI: 10.1115/imece2019-10016

A. Mazumder

{"title":"Finite Element Method for Fluid Flow in 3D Domains Containing Moving Interfaces","authors":"A. Mazumder","doi":"10.1115/imece2019-10016","DOIUrl":"https://doi.org/10.1115/imece2019-10016","url":null,"abstract":"\u0000 This study presented a three-dimensional (3D) finite element method (FEM) for the numerical analysis of fluid flow in domains containing moving interfaces. This method falls into the general category of Arbitrary Lagrangian Eulerian (ALE) method; based on a fixed mesh that is locally adapted at the moving interfaces and reverts to its original shape once the moving interfaces go over the elements. The 3D domain occupied by the fluid at any time in the simulation is used as the reference domain and is discretized using a mesh of hexahedral tri-linear isoparametric finite elements. The moving interfaces are defined by sets of marker points so that the global mesh is independent of interface movement and eliminates the possibility of mesh entanglement. The mesh never becomes unsuitable due to its continuous deformation, thus eliminating the need for repeated re-meshing and interpolation. A validation is presented via a problem with an analytical solution for the 3D flow between two planes separating at a prescribed speed that shows second order accuracy. The model’s capabilities are illustrated through application to laminar incompressible flows in different geometrical settings that show the flexibility of the technique.","PeriodicalId":229616,"journal":{"name":"Volume 7: Fluids Engineering","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":"128512833","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}

引用次数: 0

Hydrodynamic Coefficients for an Extraterrestrial Submarine 地外潜艇的水动力系数

Volume 7: Fluids Engineering Pub Date : 2019-11-11 DOI: 10.1115/imece2019-10257

Hani AlHasni, Ona Thornquist, Shafquat Islam, P. Garrison, I. Sahin

引用次数: 0

Development of 3-D Printed Optically Clear Rigid Anatomical Vessels for Particle Image Velocimetry Analysis in Cardiovascular Flow 用于心血管血流颗粒图像测速分析的3d打印光学透明刚性解剖血管的研制

Volume 7: Fluids Engineering Pub Date : 2019-11-11 DOI: 10.1115/imece2019-11649

Nicholas Stanley, Ashley Ciero, W. Timms, Rodward L. Hewlin

{"title":"Development of 3-D Printed Optically Clear Rigid Anatomical Vessels for Particle Image Velocimetry Analysis in Cardiovascular Flow","authors":"Nicholas Stanley, Ashley Ciero, W. Timms, Rodward L. Hewlin","doi":"10.1115/imece2019-11649","DOIUrl":"https://doi.org/10.1115/imece2019-11649","url":null,"abstract":"\u0000 In recent years, blood flow analysis of diseased arterial mock vessels using particle image velocimetry (PIV) has been hampered by the inability to fabricate optically clear anatomical vessel models that realistically replicate the complex morphology of arterial vessels and provide highly resolved flow images of flow tracer particles. The aim of the present work is to introduce an approach for producing optically clear rigid anatomical models that are suitable for PIV analysis using a common 3-D SLA inkjet printing process (using a Formlabs Form 2 3-D printer) and stock clear resin (RS-F2-GPCL-04). By matching the index of refraction (IOR) of the working fluid to the stock clear resin material, and by printing the part in a 45-degree print orientation, a clear anatomical model that allows clear visualization of flow tracer particles can be produced which yields highly resolved flow images for PIV analyses. However, a 45-degree print orientation increases the need for post processing due to an increased amount of printed support material. During post processing, the part must be wet sanded in several steps and surface finished with Novus Plastic Polish 3 Step System to achieve the final surface finish needed to yield high quality flow images. The fabrication methodology of the clear anatomical models is described in detail.","PeriodicalId":229616,"journal":{"name":"Volume 7: Fluids Engineering","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":"125538162","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}

引用次数: 8

The Effect of the Embedded Spacers on the Performance of Direct Contact Membrane Distillation System Operating With Different Inlet Feed Temperature 研究了不同进料温度下，内嵌式隔膜对直接接触膜蒸馏系统性能的影响

Volume 7: Fluids Engineering Pub Date : 2019-11-11 DOI: 10.1115/imece2019-10723

Anas M. Alwatban, Ahmed M. Alshwairekh, U. Alqsair, Robert Krysko, Abdullah A. Alghafis, A. Oztekin

{"title":"The Effect of the Embedded Spacers on the Performance of Direct Contact Membrane Distillation System Operating With Different Inlet Feed Temperature","authors":"Anas M. Alwatban, Ahmed M. Alshwairekh, U. Alqsair, Robert Krysko, Abdullah A. Alghafis, A. Oztekin","doi":"10.1115/imece2019-10723","DOIUrl":"https://doi.org/10.1115/imece2019-10723","url":null,"abstract":"\u0000 Computational fluid dynamics simulations are used to model the effect of the inlet feed temperature in direct contact membrane distillation modules. Embedded spacers are used as a local mixing promoter tool. Net-type spacers of angle 45° are used as spacers. The presence of the spacers will mitigate the temperature and concentration polarization effects. The calculation of the vapor flux through the membrane is based on the Dusty-Gas model. The membrane is considered as a functional surface, and the embedded spacers are treated as impermeable surfaces. The vapor flux equation couples the variation of the vapor flux in the feed and the permeate channel with the variation of the feed concentration along the membrane. The flow is considered turbulent in channels containing embedded spacers. The k–ω SST turbulent model is used to characterize the steady-state turbulent structures inside the flow channels. The flow rate in the feed and the permeate channels is fixed. The membrane properties are also fixed. The inlet feed temperature is varying while fixing the inlet permeate temperature. The results indicate that the embedded spacers increase the vapor flux permeation while the temperature and concentration polarizations are mitigated. As the inlet feed temperature is increased, the effect of the embedded spacers becomes more significant.","PeriodicalId":229616,"journal":{"name":"Volume 7: Fluids Engineering","volume":"49 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":"125591547","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}

引用次数: 1

Assessment of Eddy-Viscosity Turbulence Models on Flow in a Wheelhouse 驾驶室流动的涡粘湍流模型评价

Volume 7: Fluids Engineering Pub Date : 2019-11-11 DOI: 10.1115/imece2019-10453

Kaloki L. Nabutola, S. Boetcher

引用次数: 0

Effect of Impingement Surface Velocity on Slot Jet and Slot Jet Reattachment Nozzles’ Flow Field 撞击面速度对槽式射流及槽式射流再附着喷嘴流场的影响

Volume 7: Fluids Engineering Pub Date : 2019-11-11 DOI: 10.1115/imece2019-11404

M. Farzad, J. Yagoobi

{"title":"Effect of Impingement Surface Velocity on Slot Jet and Slot Jet Reattachment Nozzles’ Flow Field","authors":"M. Farzad, J. Yagoobi","doi":"10.1115/imece2019-11404","DOIUrl":"https://doi.org/10.1115/imece2019-11404","url":null,"abstract":"\u0000 Slot jet reattachment (SJR) nozzle is developed in an attempt to enhance heat and mass transfer characteristics while effectively controlling the impingement surface force exerted by the jet flow. In the SJR nozzle, the jet is directed outward from the nozzle exit and it then reattaches on an adjacent surface in its vicinity. The turbulent mixing occurs at the boundaries of the free stream induces secondary flow by mass entrainment and causes the flow to reattach the surface in the form of an oval reattachment at close nozzle to surface spacing [1].\u0000 All the previous studies had considered a stationary reattachment surface. This paper, for the first time, investigates the impact of reattachment surface movement on the flow structure of SJR nozzle with three different exit angles of +45°, +20°, and +10°. Specifically, this numerical study is carried out by varying the surface-to-jet velocity ratio (u* = up/ue) from 0 to 1.5 and comparing of flow reattachment flow fields to those of a regular slot jet (SJ) nozzle, where up is the speed of reattachment surface (moving plate) and ue is the jet exit velocity. In this study, jet exit temperature is kept constant at the room temperature of 20°C and all comparisons were performed at the same Reynolds number of 7,900. Additionally, the effect of SJR air exit angle on the peak surface pressure is investigated.","PeriodicalId":229616,"journal":{"name":"Volume 7: Fluids Engineering","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":"127217296","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}

引用次数: 3

Numerical and Experimental Study of an FSAE Intake Manifold FSAE进气歧管的数值与实验研究

Volume 7: Fluids Engineering Pub Date : 2019-11-11 DOI: 10.1115/imece2019-11462

C. Dunn, Luis G. Enriquez, J. Godinez, M. Moore, Xiuling Wang, Chenn Q. Zhou

{"title":"Numerical and Experimental Study of an FSAE Intake Manifold","authors":"C. Dunn, Luis G. Enriquez, J. Godinez, M. Moore, Xiuling Wang, Chenn Q. Zhou","doi":"10.1115/imece2019-11462","DOIUrl":"https://doi.org/10.1115/imece2019-11462","url":null,"abstract":"\u0000 Formula SAE (FSAE) is an international student engineering competition that allows students to design, manufacture and race a formula-style race car to compete with other universities. This season the Purdue University Northwest (PNW) Formula SAE Team required a means of evaluating potential performance characteristics and optimizing future design concepts for the intake manifold system prior to manufacturing, to reduce the overall time and cost. The air intake system is a critical powertrain system component that requires numerical study and experimentation to validate any meaningful design. Without simulation and testing, an efficient intake may only be designed by chance.\u0000 This project focused on replicating the characteristic flow behavior witnessed in the 2017–2018 PNW FSAE intake system using the computational fluid dynamics (CFD) software named STAR-CCM+. A 3D printed test model was manufactured and tested on a flow bench to gather boundary conditions and pressure data from multiple locations within the intake manifold. The physical testing results of the 2017–2018 intake system were with the CFD results in order to validate the simulation models.","PeriodicalId":229616,"journal":{"name":"Volume 7: Fluids Engineering","volume":"13 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":"130141625","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}

引用次数: 0

Magnetic-Based Particle Tracking in a Dense Granular Shear Flow 致密颗粒剪切流中基于磁的颗粒跟踪

Volume 7: Fluids Engineering Pub Date : 2019-11-11 DOI: 10.1115/imece2019-10652

Xingtian Tao, Huixuan Wu

引用次数: 0