# Abaqus CFD-Sample Problems

Description
Abaqus CFD-Sample Problems
Categories
Published

View again

All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Related Documents
Share
Transcript
Abaqus/CFD  – Sample Problems  Abaqus 6.10  Contents 1. Oscillatory Laminar Plane Poiseuille Flow 2. Flow in Shear Driven Cavities 3. Buoyancy Driven Flow in Cavities 4. Turbulent Flow in a Rectangular Channel 5. Von Karman Vortex Street Behind a Circular Cylinder  6. Flow Over a Backward Facing Step 2 This document provides a set of sample problems that can be used as a starting point to perform rigorous verification and validation studies. The associated Python scripts that can be used to create the Abaqus/CAE database and associated input files are provided.  1.Oscillatory Laminar Plane Poiseuille Flow  Oscillatory Laminar Plane Poiseuille Flow Overview This example compares the prediction of the time-dependent velocity profile in a channel subjected to an oscillatory pressure gradient to the analytical solution. Problem description  A rectangular 2-dimensional channel of width = 1m and length = 2m is considered. An oscillatory pressure gradient (with zero mean) is imposed at the inlet. The analysis is carried out in two steps. In the first analysis step, a constant pressure gradient is prescribed for the first 5 seconds of the simulation to initialize the velocity field to match that of the analytical steady-state solution. In the second analysis step, the flow is subjected to an oscillatory pressure gradient. A 40x20 uniform mesh is used for this problem. Two dimensional geometry is modeled as three dimensional with one element in thickness direction. 2 m1 mxz Schematic of the geometry used Wall boundary condition OutletWall boundary condition Time-dependent inlet pressure   0 cos(()) o dP  P t t dx     Inletpressureprofile  Oscillatory Laminar Plane Poiseuille Flow Features Laminar flowTime-dependent pressure inlet Multi-step analysis Boundary conditions Pressure inlet t < t o : p = 7.024t > t o : p = 10*Cos (( t-t o )) ; t o = 5,  = p/5 Pressure outlet (p = 0)No-slip wall boundary condition on top and bottom ( V  = 0) Analytical solutionReferences Fluid Mechanics, Second Edition: Volume 6 (Course of Theoretical Physics), Authors: L. D. Landau, E.M. Lifshitz 5       )cos()cos(12Re),( 2 hh z ei P t  yu  t i so              i  t i e P dxdP     0     2   s  •  h is the half-channel width •  P o is the amplitude of pressure gradient oscillation •  is the circular frequency

Jan 2, 2019

#### Ekonomi Politik Sumatra Timur (Karakteristik, Struktur dan Ke Arah Perubahan

Jan 2, 2019
Search
Similar documents

View more...
Tags

## Aviation

Related Search
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks