What is the meaning of "centre-line pressure distribution"?

While reading a textbook, i saw this term in the following context, which is related to vehicle aerodynamics. The centre-line pressure distribution arising from the airflow over a typical...

05 June 2018 5,510 0 View

How to reduce friction/viscous drag?

From the texts on vehicle aerodynamics, i have learned that a better shape of a car can reduce the pressure drag involved. What can be done to reduce the viscous drag?

05 June 2018 1,670 5 View

What is "Cell Active Area" in a PEMFC?

In the literature, most of the authors mentions the active area of the fuel cell being investigated. Is the area bounded with the red box (see attached image) the effective/active area of a PEMFC...

11 December 2017 9,277 0 View

How to calculate the drag coefficient from a 2D geometry

05 June 2017 3,155 7 View

Can a PEM fuel cell give it's maximum power at 3V?

Usually, researchers draw an IV curve to study the performance of a pemfc. I have two questions in that. Is that only to find the peak power (I x V) point to operate the cell at the particular...

07 August 2016 533 2 View

In a 100% humidified hydrogen, what would be the mass of water molecules per unit mass of hydrogen?

My CFD simulation requires a humidified (mixed species H2 & H2O) hydrogen supply at a boundary in which the mass flow (without humidification) of hydrogen to be supplied is predetermined. I...

04 May 2016 4,736 5 View

How to define a gas species inlet boundary condition with (RH) Relative Humidity in fluent?

My CFD simulation (in fluent) requires a boundary condition in which a humidified gas species should be supplied on a boundary in a fixed mass flow rate. How could i specify the humidity of the...

04 May 2016 3,905 2 View

What are the suitable inlet and outlet boundary conditions for a recirculating anode type PEMFC?

I am trying to simulate a single cell recirculating anode (open end anode) PEMFC using Ansys Fluent Fuel cell module. It is recommended by Ansys to keep "mass-flow inlet" for anode & cathode...

03 April 2016 6,344 3 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

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

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

How to show arrows over the streamlines in CFD-post?

I follow this to make streamlines like the photos attached below: (software- CFD post-processing) First I plot the 2D streamline over a surface "streamline 1". them I plot a vector by the...

01 March 2021 8,668 3 View

Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS?

I need to model masonry and reinforced concrete minarets for my MSc thesis. Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS? (Or any other program for just...

01 March 2021 736 3 View

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View

Can Virtual Servers (remote dekstop manager) run heavy ANSYS Fluent CFD simulation ?

I have a virtual machine. My host Pc specs are not that good thats why i went for virtual servers. so basically my host pc has 8gb of ram with nvidia quadro k2200 4Gb DDR5 GPU ,processor intel...

01 March 2021 8,415 1 View

How to increase mesh quality of a cfd model in ansys fluent?

How can one improve mesh skewness, orthogonality, aspect ratio?

28 February 2021 7,730 3 View

How can we simulate an hyperelastic-viscoelastic behavor with Ansys APDL?

I am working on modeling and simulation of biomecanical material behaviour, I have succeded on simulating skin using anisotropic hyperelastic material, on APDL and in our lab's finite element...

28 February 2021 552 3 View

Complex wave form in ANSYS?

Is there a way to input wave speed in a complex form on ANSYS? The wave speed I need to assign a material is 325(1+0.11i) however I have been unable to do this thus far. Failing that, is there...

27 February 2021 5,969 1 View