Steady Vs Unsteady flow over a cylinder

AIM: To Perform the meshing of pressure valve using three different target lengths starting from 5 mm to 0.5 mm  MESH PARAMETERS: S.No MIN Target length MAX Target length No of elements OFF elements TYPE OF MESH IMPROVE BY RECONSTRUCT IMPROVE BY RESHAPE 1 1 3 31916 671 FREE MESH REDUCED TO 28 REDUCED TO 19 2 0.5 1 252366…

Problem Description:      The model includes a cabinet that is 160 mm in length with inlet and outlet openings at the two ends (with cross sectional area of 7.363 mm x 12.7 mm), and four symmetry walls at the other sides. The model also includes a part of the hexa-grille placed at the center of the…

Objective: To create model of data center which include computer room air conditioning units (CRACs), server cabinets, power distribution units (PDUs), and perforated floor tiles in the datacenter. and study the flow distribution and behavior of server stacks in data center Problem description: This tutorial considers…

Aim:  Unpack Icepak model of fan blades and create the rotating MRF fluid blocks to create flow in the model. Perform problem setup and solution settings for an MRF model, Use good meshing technique for good results Description: An Icepak 3D fan object may sometimes behave differently from real fan behavior. Typically…

  PCB: A printed circuit board (PCB) mechanically supports and electrically connects electroic components using conductive tracks, pads and other features etched from one or more sheet layers of copper laminated onto and/or between sheet layers of a non-conductive substrate. Components are generally…

Aim: To Build the model as per the following information.and perform thermal analysis of the model DiAGRAM: Table: Steps to be performed: 1.Create switch board diagram by using blocks 2.Assume dimensions of switch board based on requirement 3.Current and power values are distributed on respective components on switch board…

Aim: To Build the model as per the following information.and perform thermal analysis of the model DiAGRAM: Table: Steps to be performed: 1.Create switch board diagram by using blocks 2.Assume dimensions of switch board based on requirement 3.Current and power values are distributed on respective components on…

Objective: For given CAD Model generate multi level meshing and perform thermal simulation for the model with necessary assumptions. Steps to be performed: 1.Unpack the model into icepak 2.Generate mesh with Multi level settings to reduce No of nodes and elements (Done in assignment 2 week 5) 3.Perform thermal simulation…

Objective: To perform thermal simulation on model which was simplified earlier in week3 with geometric enclouser. Thermal simulation is done by applying required boundary condtions and necessary assumptions to the model. Steps to be performed: 1.Import simplified geometry into ansys icepak 2.Generate mesh for given model…

Objective: To create workflow in ansys workbench and use the simplified geometry of DME assembly provided and solve them for physics using ansys icepak. Steps to be performed: 1.Given CAD model is inserted to ansys work bench and then convert all Non-icepak bodies to icepak bodies 2.Next insert modified cad model…

Objective: For the given cad model optimize the mesh count and improve the mesh bleeding using Multi level meshing technique Problem description:1. Open and unpack the given hanging_node.tzr model.Without any modifications, the model results in about 700,000 elements. 2. Mesh count results from using the non-conformal…

                                             Non-Conformal meshing of cold plate model: Objective: To perform Non-Conformal meshing of cold plate model: Non conformal mesh : 1.Non conformal mesh basically…

Aim: To perform geometric simplification of given model (Electronic enclosure assembly) using ansys space cliam and perform necessary connections and convert into icepak model. Introduction: 1.In given cad assembly remove unwanted faces,edges and shapes which effect the thermal simulation of electronic enclosure assembly.…

Aim: Obtain the mass flow rates at the outlet for each design point. Calculate the flow coefficient and flow factor for each opening and plot the graph. Discuss the results of the mass flow rate and flow coefficien   Gate valve: 1.Gate valves are used to shut off the flow of liquids rather than for flow regulation. When…

Aim: 1. Perform a combustion simulation on the combustor model and plot the variation of the mass fraction of the different species’ in      the simulation using line probes at different locations of the combustor. 2. In this part, you need to add the water content in the fuel from 5% to 30% by…

  Aim:- To perform analysis on cyclone separator and calculate the separation efficiency and pressure drop.   Objective:- To write a few words about any four empirical models used to calculate the cyclone separator efficiency.  To perform an analysis on a given cyclone separator model by varying…

Aim: Perform a steady-state conjugate heat transfer analysis on a model of a graphics card. Run the simulation by varying the velocity from 1m/sec to 5m/sec for at least 3 velocities and discuss the results. Find out the maximum temperature and heat transfer coefficient attained by the processor. Prove that the simulation…

 Aim: Give a brief description of why and where a CHT analysis is used. Maintain the y+ value according to the turbulence model and justify the results.  Calculate the wall/surface heat transfer coefficient on the internal solid surface & show the velocity & temperature contours in appropriate areas.…

 Aim:      1.Explian CFD models that have been based on the mathematical analysis of Rayleigh Taylor waves.     2.Perform the Rayleigh Taylor instability simulation for 2 different mesh sizes with the base mesh being 0.5 mm.                 …

Aim: 1. Describe Ahmed's body and its importance. 2. Explain the reason for the negative pressure in the wake region.  3. Explain the significance of the point of separation.  Ahmed body: 1.Ahmed body was created by S.R Ahmed in his research some salient feature of time averaged ground vechicle wake in 1984,…

Objective : To Simulate the flow over a cylinder in steady and unsteady state. and to explian the phenomenon of Karman vortex street. Introduction:  1)vortex shedding is an oscillating flow takes place when a fluid flows past a bluff body. 2)A bluff body can be defined as a body that as a…

Aim:  To perform steady-state simulations for both short & long Tee at hot inlet temperature 360C & the Cold inlet 190C and comparing mixing effectiveness Using the k-epsilon and k-omega SST turbulence models.   Case 1 (short mixing tee at Momentum ratio of 2) Geometry: (short mixing tee)  …

Objective: Describe need for interpolation schemes and flux limiters in FVM by using the 1D linear heat conduction equation and also differntiate between FDM & FVM. Discritization: Discritization is termed as a first step  making them suitable for numerical evaluation by converting partial differntial equations…

Objective:  simulation of  incompressible-laminar-viscous flow through the backward facing step geometry. by performing a transient simulation using icoFoam solver and velocity profile is ploted at a distance of 0.085 from starting node Block diagram:                  …

Objective: simulation of isentropic flow through a quasi 1D subsonic-supersonic nozzle using conservation and non-conservation forms of the governing equations and sovle them using the MacCormack's technique.  Convergent- divergent nozzle:                     …

%% Steady state Jacobian iterative technique clear all close all clc % inputs L=1 % Length of domain (square); %nx,ny= no of grid points; nx=10; ny=nx; x=linspace(0,L,nx); y=linspace(0,L,ny); dx=x(2)-x(1); dy=y(2)-y(1); error = 9e9; tol = 1e-4; T=300*ones(nx,ny); % Define boundary conditions T_t =600; T_b =900; T_l =400;…