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Hi, guys! This is a great video. However, I wasn't able to calculate the FTL and boundary layer thickness the same you did. Could you please provide the value of the dynamic viscosity (v)? Thank you!

very informative video sir how can I contact you? sir can I get your email I have a problem with my simulation

Hello. thanks for your informative video. could you please share the presentation ?

I am doing CFD research regarding the wind turbine. And thanks for your explanation. Well done!

Hello. Excuse me, could you help me? I'm modeling a tidal turbine, I need to find the average thrust and average power. But I didn't understand how you set up the power report. You multiplied the RPM by some figure, and then multiplied it by the torque report. What were those second digits? Is this transformation rpm into rps?

Total pressure=Static+Dynamic. In CFD by Ansys does not match. Why?

could you send me the .sim file without mesh ?

is it possible to share the simulation file with all settings done, but without mesh

Which software it is???

Thank you for your nice work. Can you tell me how to make Q-Criterion in a region (not whole calculation domain)? Thanks!

Strange that the buoy not tilting against waves. (pitch) So this is not reality, how to trust?

Very Good and Clear Presentation! I wish every teacher could explain this well, I had a Calculus Professor who did this well which combined with a Small class size was perfect for me. Thanks for the time and effort that you put into this work. You could do a Book and a Set of DVDs. Or an online Interactive book/series!

Can you do a Presentation like this on Landau Damping?

Great Presentation, Very Well Done - This is really a University Level Class At Home, Thank You! This done better and More Clearly than at most Universities I Bet!

can someone suggest how to do a free decay test for heave in this simulation

ive tried this 4 times. but it always have reversed flow. but it just between +- 500 surfaces. I think we need to do more refinement isn it.

Using Regions > VirtualWindtunnel > Boundaries and then edditing the boundaries doesnt give me the ability to adjust meshing paramters, i only get "Physics conditions and values". Do you have any ide what my mistace could be? I have obviously created a Mesh continoum already

Dear Mujteba could you please upload the 1080p version of this tutorial? Regards from ITU

Dorood Mr. Amiri, This was a great tutorial. I was wondering though about a simple confusion of mine that CFL is measured based on velocity, temporal discritization and spatail discetrization, and usually 0.25 is selected for it. WHY did you select 95?

Hello! Could you please illustrate the value you used in the time step and you says"However, note that the estimation of the time - step size should also be in such a manner that in each time - step, the overset mesh moves a distance smaller than the size of the smallest cell in the background mesh. Therefore, considering this point, the time step size that we are going to use here is 0.001 sec. " from where we can see 0.001 sec in the simulation? please.

Is this 2D, so the subscripts i and j representing velocity in x and y directions?

Fascinating, glad you're born

This was a very useful video for people who are just getting started and need to learn how to use the programm. What I would have liked to see where more informations ony why we use the values that are shown and what they mean

my star ccm have missing node under tools>update event how can i fix it?

can you help me in my problem?

Thank you for this interesting tutorial. Can you give me how calculate the wetted length and wetted area.

Why did you not specify the velocity of current and wind in the VOF? Is the Buoy stationary? I have a boat moving at certain speed, where should I specify its velocity?

Good job, I would like to ask how to solve the following problems when I simulation:Error while executing calls to SIMULIA CSS, Abagus error in SMAcseNotifyStart. Director terminated the analysis due to early termination by a client. Please check for errors foreach of the analysis involved in co-simulation and also verify that the co-simulation duration timespecified in the configuration file is correct

wow thank you so much. You helped me a lot

Thank u for such a detailed tutorial…

Can you please help me with my matlab code for SMAC. Can you share your contact email

Thank you for sharing! quick question pls, Can we employ symmetry plane boundary conditions at the XZ plane and YZ plane of the buoy? I am guessing it will reduce some computational demand, BTW I am using ANSYS fluent

appreciate your kind share ! could you make tutorial of floating wind turbine with mooring line in Star-ccm+ please ?

Hi your simulations are very impressive. I need a suggestion on my simulations. I should make a DFBI simulation (with Star CCM+) in which the body turn around it self (arround y axis, obviously arround its center of mass) with a time dependent angual velocity. The problema is that with a DFBI simulation I can impose just the initial velocity of the body. Do you have an idea about how I can impose a time dependent angular velocity of the body?

Can you make a video on ship hull on the mean surface.

Such a great summary !

Thank you for this tutorial, sir can you make the tutorial on air supported floating platform to find its heave response

Thanks for the lecture. Kindly add references of the information.

Thank you for the effort. Can these models be coupled with LBM CFD method?

Hi, I am finding the added mass and damping coefficient of different floating structures using the forced heave method. For that I simulated a cylinder in free surface by STARCCM+. I should get a force between -5 and 5N when STARCCM+ gives me a force of 30N. I deduced buoyancy force and hydrostatic force from it still not in the desirable limit. following are the details and solvers i used for the simulation 1) implicit unsteady, VOF for free surface , K - epsilon turbulence with no DFBI and dynamic mesh . I also tried dynamic mesh (overset) and DFBI . 2) I have given velocity in the form of A SIN (wt) form under the motion tool as translation motion. 3) My CFL number is kept below 3 4) Flat wave with zero velocity for air and water. Initial conditions for velocity and pressure are given as zero. 5) slip wall for domain walls , and no slip wall for the translating body. The drive contains my simulation . Can u please take a look at my simulation and tell me wats wrong? drive.google.com/file/d/1rFnL4449stu4aWyPewxF3HGHoxp11_j3/view?usp=sharing

merc mamnoon

@2:03 - What is k on the E(k) graph? The "wer" number?? It was inaudible

@35:09 - How do you obtain the 4th order equation below the vorticity function? It was not clear from the video.

Hello, how can i dowload this program ?

Excellent video, thanks for the explanation. If the suboff has a vertical part which is above the water how will the bounday definition change? How will vof model change? As the part above the water is mainly under aerodynamic force rather than hydrodynamics.

in continua am not geting mesh option please help

Excellent presentation, very clear and well organized, thank you!