Thanks for your interest. Sorry for the late reply. Please refer chapter 10 page number 450 in chemical engineering design book by sinnot. All the formulas are available in same book.
sir, i have a doubt how u came to know the size of the particles u are getting out from the under flow is 5micro meter, and how to find the size of the particles coming out at the vortex and underflow using cfd
You have to use discrete phase model approach. In that case you have to give escape boundary condition at the vortex outlet and trap boundary condition to be given at the under flow or bottom of the cyclone. In dpm you have to give uniform particle size any diameter for simulation. If your particle size is not uniform then use rosin rammler approach for simulation. After iteration you will get number particles collected and number of particles escaped through particle tracking option. These are all the methodology.
Thank you, sir. It's a wonderful & informative video. But I want to know, How could we extract the data for which particle size is going to overflow and underflow! I don't understand how to do it in Fluent. As there is no such option in particle tracking which will show us the particle exit history at the two different outlets. Please help me to know this.
There are two methods available in particle simulation first one is uniform size distribution and second one is rosin ramler approach. In first case we have to inject 100% uniform size particle so we can predict how much collected and how much exit for the particular particle size. In second case rosin ramler, we can set minimum size and maximum size particles. It will give cumulative collection efficiency. But predicting the individual particle size is difficult one. By this second case you can approximately predict. Otherwise we have to conduct experiment only. Thank you sir
@@dr.venkys-easylearningknow915 Thanks for your reply. But I guess that's how we calculate the separation efficiency or cut-size. Right!!! Because I found in most of the papers people usually plot the separation curve (almost S-structured) which I think is based on data taken from Fluent particle tracking. And those data are may be tracked from what size of particles went to underflow and overflow. Just lemme know if you could put some light on that.
Usually efficiency is predicted for each individual uniform particle size. After that you can plot that s shaped plot. For calculating the efficiency you have to use dpm approach. After converging the solution you will get number of particles trapped, number of particles escaped and number particles injected. By this result you can predict collection efficiency. It means take ratio of number of particles trapped to the number of particles injected. By this way you can calculate efficiency for each particle size and then you can plot. Moreover you can predict how much particles escaped (upward flow) and how much particles collected (downward flow).
Thank you sir....I want to simulate a hydrocyclone separator. Where I want to input mixture of two particles (PVC and PET) and separate them and calculate the efficiency ...but i am facing a lot of problem inserting two types particle through inlet...I badly need your help in this case😓
@@dr.venkys-easylearningknow915 sir, for the fluids from well content of 3 phases; oil, gas and water with different densities. I would like to learn cyclone separation for this fluid. Perhaps if you would have an online course for this. thanks very much sir
Sir , why you have not used k-epsilon RNG swirling flow model ? I think it is more appropriate to describe swirling flow? I have used it with keeping simple model for ( velocity pressure coupling) , the solution has not converged after 6000 itérations ! Can you give me an explanation for this please ? and what I must modify to accelerate convergence?
You can use k-epsilon RNG model also. But nowadays RSM only accepted by reviewers. However all the models produce more are less same result. Slight deviation only happened in results. For accurate convergence you have to improve your modelling accuracy. After that you have to improve your mesh quality. Increasing the number of cells produce good convergence. If your iteration is exceed to 6000, use transient or unsteady state approach for run the calculation. In this case reduce time step for quick convergence.
@@dr.venkys-easylearningknow915 Thanks you Sir , ok I will improve my mesh ( mostly I will use polyhedral mesh) , study firstly a mesh convergence (using first of all your numerical model) , than I will test a steady k epsilon RNG model , if convergence seems laborious , I will try unsteady model ) [ I will not use enhanced wall functions for y+ , because I am not concerned in turbulence in boundary layer ]I must review my courses talking about how to make convergence faster :)
Thank you sir for the video it was easy to understand and very informative. Sir, how can i extract data to make plots for velocity data ( i.e. tangential, radial etc ) vs radial position . Also sir if possible can I mail you some questions, your analysis was more explicit and detailed then what i learnt in college.
Hello sir, I am simulating sediment transport in channel flows using DPM. I have some doubts. Please help me. I have some questions, If you allow i will post here or email you separately. I am a PhD STUDENT IN iit gNADHINAGAR.
@@dr.venkys-easylearningknow915 Thank you sir: Before I ask doubts, I will try to narrate my problem. I am interested in knowing the transport mode of sediment in a channel. In a channel, there is a pier. Due to pier, the turbulent structures are formed (Horse shoe vortex). The turbulent structure will have an impact on the modes of transport of approaching sediment particles. Please note that I am using Large eddy simulation (LES). Now here are some questions: 1. What actually means unsteady particle tracking and steady particle tracking; 2. I want to put some sand particles at the bed level near the pier. How to put the sand particles at the bed level near the pier. The sand particles should be put occupying a small area, uniformly. the particle size is 0.001m. I do not wish the continuous mass flow rate of the sediment injection. I just want to put it only one time when the flow is fully developed. Which injection method should I use. Regards,
Dear Sir, Your reply will help me a lot. I have faced a lot of problems. Thank you in advance. I can share my case and data file of fluent also. Regards,
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Thanks you Sir
God bless you Sir ! I wish you happiness and success
Thanks for your interest. Sorry for the late reply. Please refer chapter 10 page number 450 in chemical engineering design book by sinnot. All the formulas are available in same book.
Thanks for your wishes.
Good kick start during pandemic sir. My heart felt prayers and happiness sir.
Thank you mam
Great tutorial, but Shouldn’t the RSM model be used for greater accuracy as is suggested in literature too
i have a question, what's mean [steel., particle ID]? (24:49 at variable option)
Really good ❤
How can this be a stationary model? Why the particles have a single position at the end?
sir how many number of particles are set for this simulation????
thank you very much . this video real helps me.
😄
very very useful. Thank you.
sir, i have a doubt how u came to know the size of the particles u are getting out from the under flow is 5micro meter, and how to find the size of the particles coming out at the vortex and underflow using cfd
You have to use discrete phase model approach. In that case you have to give escape boundary condition at the vortex outlet and trap boundary condition to be given at the under flow or bottom of the cyclone. In dpm you have to give uniform particle size any diameter for simulation. If your particle size is not uniform then use rosin rammler approach for simulation. After iteration you will get number particles collected and number of particles escaped through particle tracking option. These are all the methodology.
Is the geometry vailable??
Can you do the same simulation using ansys CFX?
Sir can you please share the existing model you have used in this simulation,it will be great help.
Thank you, sir. It's a wonderful & informative video. But I want to know, How could we extract the data for which particle size is going to overflow and underflow! I don't understand how to do it in Fluent. As there is no such option in particle tracking which will show us the particle exit history at the two different outlets. Please help me to know this.
There are two methods available in particle simulation first one is uniform size distribution and second one is rosin ramler approach. In first case we have to inject 100% uniform size particle so we can predict how much collected and how much exit for the particular particle size. In second case rosin ramler, we can set minimum size and maximum size particles. It will give cumulative collection efficiency. But predicting the individual particle size is difficult one. By this second case you can approximately predict. Otherwise we have to conduct experiment only.
Thank you sir
@@dr.venkys-easylearningknow915 Thanks for your reply. But I guess that's how we calculate the separation efficiency or cut-size. Right!!!
Because I found in most of the papers people usually plot the separation curve (almost S-structured) which I think is based on data taken from Fluent particle tracking. And those data are may be tracked from what size of particles went to underflow and overflow. Just lemme know if you could put some light on that.
Usually efficiency is predicted for each individual uniform particle size. After that you can plot that s shaped plot. For calculating the efficiency you have to use dpm approach. After converging the solution you will get number of particles trapped, number of particles escaped and number particles injected. By this result you can predict collection efficiency. It means take ratio of number of particles trapped to the number of particles injected. By this way you can calculate efficiency for each particle size and then you can plot.
Moreover you can predict how much particles escaped (upward flow) and how much particles collected (downward flow).
excellent sir
Thank you ji
Can you please share geometry
Sir can you send Some videos related to total concentration method
Thank you sir....I want to simulate a hydrocyclone separator. Where I want to input mixture of two particles (PVC and PET) and separate them and calculate the efficiency ...but i am facing a lot of problem inserting two types particle through inlet...I badly need your help in this case😓
thanks sir for valuable coaching, may i please kindly ask you? do you have a simulation for multiphase?
Which type of flow?. Please give some examples. I will try to post.
@@dr.venkys-easylearningknow915 sir, for the fluids from well content of 3 phases; oil, gas and water with different densities. I would like to learn cyclone separation for this fluid. Perhaps if you would have an online course for this. thanks very much sir
Sir , why you have not used k-epsilon RNG swirling flow model ? I think it is more appropriate to describe swirling flow? I have used it with keeping simple model for ( velocity pressure coupling) , the solution has not converged after 6000 itérations ! Can you give me an explanation for this please ? and what I must modify to accelerate convergence?
You can use k-epsilon RNG model also. But nowadays RSM only accepted by reviewers. However all the models produce more are less same result. Slight deviation only happened in results. For accurate convergence you have to improve your modelling accuracy. After that you have to improve your mesh quality. Increasing the number of cells produce good convergence. If your iteration is exceed to 6000, use transient or unsteady state approach for run the calculation. In this case reduce time step for quick convergence.
@@dr.venkys-easylearningknow915 Thanks you Sir , ok I will improve my mesh ( mostly I will use polyhedral mesh) , study firstly a mesh convergence (using first of all your numerical model) , than I will test a steady k epsilon RNG model , if convergence seems laborious , I will try unsteady model ) [ I will not use enhanced wall functions for y+ , because I am not concerned in turbulence in boundary layer ]I must review my courses talking about how to make convergence faster :)
Great explain and tutorial sir. can you explain corrosions model in ansys? I need help please
Thank you Sir.....
Thank you sir for the video it was easy to understand and very informative. Sir, how can i extract data to make plots for velocity data ( i.e. tangential, radial etc ) vs radial position . Also sir if possible can I mail you some questions, your analysis was more explicit and detailed then what i learnt in college.
I did the same but in my simulation the results say it only trapped 100 of 8,000. Can you help me find out why?
How did you inject 8000 particles? I want to inject a number of particles but I am not able.
Hello sir, I am simulating sediment transport in channel flows using DPM. I have some doubts. Please help me. I have some questions, If you allow i will post here or email you separately. I am a PhD STUDENT IN iit gNADHINAGAR.
Welcome pandey please post your doubt in comment. I will try to clear
@@dr.venkys-easylearningknow915 Thank you sir:
Before I ask doubts, I will try to narrate my problem. I am interested in knowing the transport mode of sediment in a channel. In a channel, there is a pier. Due to pier, the turbulent structures are formed (Horse shoe vortex). The turbulent structure will have an impact on the modes of transport of approaching sediment particles. Please note that I am using Large eddy simulation (LES). Now here are some questions:
1. What actually means unsteady particle tracking and steady particle tracking;
2. I want to put some sand particles at the bed level near the pier. How to put the sand particles at the bed level near the pier. The sand particles should be put occupying a small area, uniformly. the particle size is 0.001m. I do not wish the continuous mass flow rate of the sediment injection. I just want to put it only one time when the flow is fully developed. Which injection method should I use.
Regards,
Dear Sir, Your reply will help me a lot. I have faced a lot of problems. Thank you in advance. I can share my case and data file of fluent also. Regards,
send your mail Id I have to ask few details from you.
@@dr.venkys-easylearningknow915 My email: abhishek.pandey@iitgn.ac.in
I can share my phone no also in email. Thank you sir!
Kak, ga ada simulasinya kah..
Son sapos... y la condición de velocidad de extracción en la salida donde la ponen ??? SAPOS
In cyclone separator if we use above 15m/s velocity then it will separate salt. This is the optimized velocity
Hi sir,I am having cyclone separator chocking problem frequently .could you please share your email id