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

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How do I select an appropriate optimization tool?

I am performing a CFD study in "Ansys Fluent" where some 5-10 parameters are to be optimized. I can see a list of optimization tools provided by Ansys Workbench as integrated tools. How do i...

06 July 2018 840 5 View

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 5,598 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 1,827 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 9,416 0 View

How to calculate the drag coefficient from a 2D geometry

I have created a 2D geometry of a simple shape (like a vehicle) using ANSYS design modeller and created a 2D mesh using workbench mesher. After importing and solving in fluent, i got a converged...

05 June 2017 3,353 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 605 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 4,889 5 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 6,424 3 View

Regarding LBM in Boiling?

What should be the equation for halfway bounce back boundary condition for flow field with forcing term?

08 August 2024 7,938 1 View

How can I apply boundary conditions in an orthotropic steel deck numerical model using ABAQUS software?

I am trying to simulate vehicular loading on an orthotopic steel deck bridge section in ABAQUS software. The red arrow mark in the attached figure indicates the direction in which the vehicle will...

08 August 2024 719 0 View

How to start a Molecular Dynamics Simulation?

Is it possible to conduct a molecular dynamics simulation to see the effects of a specific carbohydrate on the structure of lipids (e.g., micelle structure)? I am a beginner in this field and plan...

03 August 2024 3,371 3 View

Which will be the best software for the Hydration shell analysis with molecular dynamics?

I am using a windows system, what software I should use for hydration shell analysis with molecular dynamics?

02 August 2024 3,143 4 View

Can we patent a process flow diagram developed using a process simulator but no actual cases is carried out?

Can we patent a process flow diagram developed using a process simulator but no actual cases is carried out? For example consider a process for certain product manufacture where a new process flow...

31 July 2024 781 1 View

How to restart MD without using checkpint file in GROMACS?

Dear All Gromacs User I would like to restart MD without using checkpint .cpt files? I heard there is a way for acheiveing this. Any input and sugegstions are most welcome. Thanking You Budheswar

29 July 2024 3,084 8 View

How to prepare a molecule for molecular dynamics calculations?

If I want to calculate molecular dynamics (Gromacs), do I first need to optimize the geometry of the molecule? For example, I first draw the molecule in Avogadro, and then what? I guess I can't...

28 July 2024 673 3 View

How to Import Blade geometry from CAD file in ANSYS design modeler?

Hello. I have the geometry of a blade in CAD file (stp) and I want to prepare the blade for meshing with turboGrid. I must import this file into designModeler and then transfer to the...

27 July 2024 356 3 View

Problem with Two-phase simulation?

Hello; I am conducting a CFD study on two-phase flow in a separator, utilizing refrigerant as the working fluid. For this study, I have implemented pressure inlet and pressure outlet boundary...

25 July 2024 2,309 5 View

How to create parameter and coordinate files for ligand in amber when FATAL error (maybe due to duplicate bond specifications) happens?

Hello, I'm trying to create parameter and coordinate files for a drug (PRG-A01) found on the following page: http://www.probechem.com/products_PRG-A01.html I used the guide made by Michael...

17 July 2024 3,472 3 View