Why Pressure distrution study is important for Tall buildings <200 m ?

Buildings are made of concrete (Strong and stiff) then why wind load are much important for tall buildings. Why builders are looking wind loads on tall building. Can any one explain in detail...

08 September 2018 9,767 0 View

Standard deviation error in Fluent?

Hello, I am simulating circular cylinder, i want to extract standard deviation of a Cp on a surface, I projected point over the cylinder and i report and save the file in the folder. But my...

07 August 2018 2,538 0 View

Why most of the wind engineering problems are solved by steady RANS models?

I have a question on wind flow around the building using CFD. Why the most of the people are using steady RANS (RANS) models instead of Transient (URANS and LES). The flow will be stochastic...

07 August 2018 4,585 5 View

How to make surafce points in ANSYS FLUENT USING Excel?

Hai Every one, I have a question about surface points in ANSYS FLUENT 18. I know I could input the coordinates in the surface->points option. But I have more than 200 points to monitor.it...

03 April 2018 7,832 0 View

How to write each time step of pressure coefficent in ansys fluent using %t.txt?

Hi, Every one, I am trying to write each time step of pressure coefficent uisng macros in ANSYS FLUENT in my model. After long serach and i found one document (ATTACHED) ,which mentioned like...

03 April 2018 6,153 0 View

Building simulation, I recently simulated open terrain profile using IDDES and DDES turbulence model.?

i gave my first cell height is 0.0020 accordingly with roughness measurements (0.0019) Ks< first cell height. Can i run this model in LES. ( Model height is 0.7 , width is 0.15m and Domain...

07 August 2017 3,295 3 View

How to find Cd mean and Cl rms in ANSYS fluent?

09 October 2016 9,189 2 View

How to switch IDDES ( improved delayed detached eddy simulation )in ansys fluent?

07 August 2016 7,356 0 View

How to relate the strouhal number FFT fluent to manual calculation St= FD/V?

02 March 2016 839 5 View

How to justify this coefficient of pressure (Cp) in this Building ?

02 March 2016 3,290 7 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

Why the results when using wall thickness and when using shell conduction are different in ansys fluent?

Actually, I am running cfd simulation for a heat exchanger which has two fluids one hot and other one is cold fluid. there is a solid domain between them, which I removed and instead I have used...

01 March 2021 9,537 2 View