A Numerical Simulation of the Vortex Ring Field Incurred by A Round Jet Rui Wang Advisor: Dr. Robin Shandas Department of Mechanical Engineering University.

Slides:

Advertisements

Similar presentations

MASS TRANSFER TO SPHERE AND HEMISPHERE ELCTRODES BY IMPINGING JET

Advertisements

University of Greenwich Computing and Mathematical Sciences

Turbulent flow over groups of urban-like obstacles

Introduction to Computational Fluid Dynamics

Outline Overview of Pipe Flow CFD Process ANSYS Workbench

Usefulness of velocity profiles based on 3D cine PC MR used as boundary conditions for computational fluid dynamics of an intracranial aneurysm : investigation.

Hongjie Zhang Purge gas flow impact on tritium permeation Integrated simulation on tritium permeation in the solid breeder unit FNST, August 18-20, 2009.

Direct Forcing Immersed Boundary (DFIB) Method for Mixed Heat Transfer

MAE 3241: AERODYNAMICS AND FLIGHT MECHANICS

2L 2aL s h T Introduction Zach Frye, University of Wisconsin-Eau Claire Faculty Advisors: Mohamed Elgindi, and John Drost, Department of Mathematics Funded.

Computer Aided Thermal Fluid Analysis Lecture 10

Lectures on CFD Fundamental Equations

PETE 203 DRILLING ENGINEERING

Orthogonal H-type and C-type grid generation for 2-d twin deck bridge Xiaobing Liu, Chaoqun Liu, Zhengqing Chen Mathematic Department, University of Texas.

Dr. Laila Guessous Suresh Putta, M.S. Student Numerical Investigations of Pulsatile Flows To develop a better understanding of the characteristics of pulsating.

October 13, Dynamic System Model for Ventricular Cardiac Diastolic Function Project Proposal Justin K. Gross Project #18 University of Colorado at.

Computational Mechanics & Numerical Mathematics University of Groningen Multi-scale modeling of the carotid artery G. Rozema, A.E.P. Veldman, N.M. Maurits.

MECH 221 FLUID MECHANICS (Fall 06/07) Chapter 9: FLOWS IN PIPE

A Study of Fluid Flow and Heat Transfer in a Liquid Metal in a Backward-Facing Step under Combined Electric and Magnetic Fields E. Gutierrez-Miravete and.

1/36 Gridless Method for Solving Moving Boundary Problems Wang Hong Department of Mathematical Information Technology University of Jyväskyklä

California State University, Chico

Thermal Development of Internal Flows P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi Concept for Precise Design ……

Dr. Xia Wang Assistant Professor Department of Mechanical Engineering Tel: Fax: Contact.

Numerical study of the blade cooling effect generated by multiple jets issuing at different angles and speed into a compressible horizontal cross flow.

1 CFD Analysis Process. 2 1.Formulate the Flow Problem 2.Model the Geometry 3.Model the Flow (Computational) Domain 4.Generate the Grid 5.Specify the.

Computational Modelling of Unsteady Rotor Effects Duncan McNae – PhD candidate Professor J Michael R Graham.

Drilling Engineering – PE 311 Turbulent Flow in Pipes and Annuli

ICHS4, San Francisco, September E. Papanikolaou, D. Baraldi Joint Research Centre - Institute for Energy and Transport

I.Z. Naqavi 1, E. Savory 1 & R.J. Martinuzzi 2 1 Advanced Fluid Mechanics Research Group Department of Mechanical and Materials Engineering The University.

Page 1 SIMULATIONS OF HYDROGEN RELEASES FROM STORAGE TANKS: DISPERSION AND CONSEQUENCES OF IGNITION By Benjamin Angers 1, Ahmed Hourri 1 and Pierre Bénard.

SIMULATION OF GAS PIPELINES LEAKAGE USING CHARACTERISTICS METHOD Author: Ehsan Nourollahi Organization: NIGC (National Iranian Gas Company) Department.

Fluid dynamic simulation in the analysis of the microclimate

Multi-scale modeling of the carotid artery

Engineering Engineer -> μηχανικος Engineering ?-> μηχανικη ?? (College of Engineering -> ???) Engineers create: -design and build machines, structures.

Title: SHAPE OPTIMIZATION OF AXISYMMETRIC CAVITATOR IN PARTIALY CAVITATING FLOW Department of Mechanical Engineering Ferdowsi University of Mashhad Presented.

The Stability of Laminar Flows - 2

Numerical study of flow instability between two cylinders in 2D case V. V. Denisenko Institute for Aided Design RAS.

CFD Study of the Development of Vortices on a Ring Wing

CFD Lab 1 Simulation of Turbulent Pipe Flow Seong Mo Yeon, Timur Dogan, and Michael Conger 10/07/2015.

MCEN 5208 – October 11, 2004 Transducer Optimization for Echo-Particle Image Velocimetry Dawn Williams, MS/PhD student Dr. Robin Shandas, Assoc. Prof University.

1 CASE 2: Modeling of a synthetic jet in a cross flow Williamsburg, Virginia, USA March 29 th -31 th 2004 C. Marongiu 1, G. Iaccarino 2 1 CIRA Italian.

School of Aerospace Engineering MITE Numerical Simulation of Centrifugal Compressor Stall and Surge Saeid NiaziAlex SteinLakshmi N. Sankar School of Aerospace.

Patient-specific Cardiovascular Modeling System using Immersed Boundary Technique Wee-Beng Tay a, Yu-Heng Tseng a, Liang-Yu Lin b, Wen-Yih Tseng c a High.

May 23, 2006SINS meeting Structure Formation and Particle Mixing in a Shear Flow Boundary Layer Matthew Palotti University of Wisconsin.

Convection Heat Transfer in Manufacturing Processes P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Mode of Heat Transfer due to.

CONVECTION : An Activity at Solid Boundary P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi Identify and Compute Gradients.

Chapter 6: Introduction to Convection

From: Hydraulic Loss of Finite Length Dividing Junctions

Date of download: 10/7/2017 Copyright © ASME. All rights reserved.

Introduction to the Turbulence Models

Energy Loss in Valves Function of valve type and valve position

Ship Hydrodynamics - Resistance

2D Jet Simulation Testing

Prepared BY: Helwan University Faculty Of Engineering

LARGE EDDY SIMILATIONS OF FULLY DEVELOPED TURBULENT CHANNEL FLOW

Lecture Objectives Learn about Implementation of Boundary Conditions

Introduction 1 - Separation 1.1 What is separation?

Models of atmospheric chemistry

Heat Transfer Coefficient

E. Papanikolaou, D. Baraldi

OVERVIEW OF FINITE ELEMENT METHOD

Accurate Flow Prediction for Store Separation from Internal Bay M

Experimental and Numerical Investigation of Controlled, Small-Scale Motions in a Turbulent Shear Layer Bojan Vukasinovic, Ari Glezer Woodruff School of.

Effect of Flow over a Cylinder MAE 5130 Viscous Flow Final Project

Lecture Objectives: Start using CFD Software Class project 1

Accurate Flow Prediction for Store Separation from Internal Bay M

12. Navier-Stokes Applications

14. Computational Fluid Dynamics

Experiments on Drop Coalescence in Liquid/Liquid Systems

Introduction to Fluid Mechanics

Presentation transcript:

A Numerical Simulation of the Vortex Ring Field Incurred by A Round Jet Rui Wang Advisor: Dr. Robin Shandas Department of Mechanical Engineering University of Colorado at Boulder Introduction to Research, 15,Oct. p.1/7

Introduction :  Early cardiac dysfunction detection is very important among cardiologists ;  When blood flows from the mitral valve into the ventricle, vortex rings exist ;  Flow spatial resolution affects shear conditions, stagnant regions and energy conversion in turn changing hemolysis, thrombus formation, cells damage etc;  Characterizing this time-resolved velocity field behavior will make early detection of cardiac dysfunction possible. Introduction to Research, 15,Oct. p.2/7

Objectives:  Obtaining Flow Field: the comprehensive velocity profile at various time steps;  Flow visualization: the trajectory and shape of the vortex ring at different time (t toff ) and different location;  Vorticity and Circulation calculations including shedding rate: numerically and analytically as well;  The pressure field associated with velocity distribution: by using vorticy equation additionally;  Comparing the results with existing data like slug model and Biot-Savart Law. Introduction to Research, 15,Oct. p.3/7

Approach:  Simulating ventricular filling with a suddenly starting round jet - Mitral valve annulus diameter D=2.51cm, ratio of stroke length (L) to orifice diameter (D) 4~13, Re. No.: match with mitral flow;  Using various waveforms to simulate the mitral flow velocity profile;  Creating computational domain: 10D x 10D,128X128 unstructured staggered grids;  Setting up B.C. and I.C.: Non-slip condition on the wall boundary, convective B.C. at outflow boundary, etc.  Problem solving: the Naiver-Stokes equations are solved using commercial code CFDRC and ĸ-ω 2- equation timing marching model (Wilcox, 1988). Introduction to Research, 15,Oct. p.4/7

Modeling: D L Introduction to Research, 15,Oct. p.5/7

Different Waveforms: U t U t U t Introduction to Research, 15,Oct. p.6/7

Computational domain: Introduction to Research, 15,Oct. p.7/7