Requesting to pls provide a modelling and simulation of each component in micro grid ?

Im wondering how to consider when to use a structured grid or an unstructured grid when conducting a coastal current simulation or probably even and other simulation as well. Im aware that some study suggest structured grid have higher accuracy but im wondering does the result would be affected if structured/unstructured grid is used on shallow coastal(<20 meter depth) in an enclosed bay especially.

CMG-STARS utilizes the average velocity of each grid block for the calculation of the capillary number. I'm trying to print these calculations in .OUT file. In the STARS user guide (Appendix D), it is mentioned that a keyword called "DBG_VEL" is responsible for printing these calculations. However, I can't find this keyword in any part of the software!! I'll be grateful for any help and clue.

One end of the structure is fixed and the other has a load.

Errors/warnings that i am seeing includes:

1)The system matrix has 4 negative eigenvalues.

2) The strain increment has exceeded fifty times the strain to cause first yield at 2 points

3)**NOTE: THE SOLUTION APPEARS TO BE DIVERGING. CONVERGENCE IS JUDGED UNLIKELY.

***ERROR: TIME INCREMENT REQUIRED IS LESS THAN THE MINIMUM SPECIFIED

***ERROR: THE ANALYSIS HAS BEEN TERMINATED DUE TO PREVIOUS ERRORS. ALL OUTPUT

REQUESTS HAVE BEEN WRITTEN FOR THE LAST CONVERGED INCREMENT

I am simulating the effect of an grid voltage amplitude imbalance on a PLL structure. However, I want to know if an amplitude imbalance (e.g. a sag in phase A), must be accompanied by a phase imbalance as well. Is it a realistic to simulate amplitude imbalance while the phase remains the same?

Hello everyone,

I'm struggling with a conceptual issue. I'm trying to do a parametric analysis for a flow device. But, the parameter I'm changing is a geometric one, actually a length. The thing is, everytime I do change the geometry my mesh also change and of course it have a diferent number of elements. The grid test I'd been using involves three different meshes each time finer, running the simulation and then checking the results. But for the parametric case this won't be valid. And I don't know what to do.

Hope you can help me.

I am using delft3D as a numerical model. I want to write a script in python that will create 3D animation like the attached file. It will be a great help for me if anyone shares the idea to me how it can be done.

Hi everyone i have exported 3D data of Scattered Ex from the COMSOL which is in 4 coloumns "X',"Y","Z","Ex" when i plot this data this data into the matlab then matlab did not plot because Matlab plot one by one pixel X*Y. How can i interpolate that data??? so that i can plot Ex field data in XY,YZ and XZ plane.

Thanks in Advance.

I have a existing NSF solver. But the versatility of the code is limited due to mesh reading part. I wish to write a code that will read CFD grid to enhance it's versatility. I need suggessions, how can I start from the scratch. Thank you very much.

For Example, I have a South Carolina map comprising of 5833 grid points as shown below in the picture. How do I interpolate to get data for the unsampled points which are not present in 5833 points but within the South Carolina(red region in the picture) region? Which interpolation technique is best for a South Carolina region of 5833 grid points?