actually I am trying to simulate a river turbine and I followed the following tutorial Fluid Flow Through a Water Turbine | Tutorial | SimScale but the force and moment plots I am getting are not seeming to be accurate and they consist of constant lines instead of a curve can you please tell me wh…

Hi @alijalil and thanks for your detailed description of your problem! For the force curve that is fine as you actually want to see the force converge and eventually stop the simulation before its expected end. Maybe you mixed it with the so called convergence plot which indeed is a curve and usua…

@alijalil I have worked on a simulation of river turbine in past. I could help you with that. Can you please share your project link here ?

[image] River Turbine by alijalil | SimScale fyp based project from university | Simulation project by alijalil link to my project

[image] River Turbine by alijalil | SimScale fyp based project from university | Simulation project by alijalil here’s the project link

hi @alijalil you continuously run the simulation with the same runtime that why its show error( all 4 runs). increase the run time in SIMULATION CONTROL. [78632] AND you can also increase your background mesh box length. in this case, your inlet and turbine were very close to each other. your …

I am not an expert with turbo machinery but the problem seems well setup and well converged. The reason your simulation does not run successfully is because it takes longer than the maximum allowable run time set under simulation controls. Increase the time to above the 5,000 seconds it is currentl…

How do I plot Cp vs TSR for this turbine?

Hi @alijalil for Cp vs TSR, please visit this project, I worked on this project previous year. CFD Simulation of Micro Hydrokinetic Turbine by Fozan | SimScale Also, please visit this topic for Cp Versus TSR curve: [image] 'CFD Simulation of Micro Hydrokinetic Turbine' simulation…

@alijalil Use the formulae given in these articles for calculation of Power coefficient, Thrust coefficient and Tip-Speed Ratio. Experimental and numerical characterization of a full-scale portable hydrokinetic turbine prototype for river applications - ScienceDirect Numerical characterization of…

hi @Fozan . I did check your project. I have noticed that your pressure force plot along z is coming out to be negative however my pressure force plot along y is coming out to be positive. and vice versa in the case of pressure moments.(my turbine axis is along y axis). In short there is a differenc…