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Numerical simulation of hull-propeller interaction |
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January 31, 2013, 02:06 |
Numerical simulation of hull-propeller interaction
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#1 |
New Member
jerry thomas varghese
Join Date: Jan 2013
Posts: 5
Rep Power: 13 |
HELLO
My name is Jerry Thomas. I am doing a Project on Hull-Propeller interaction in Starccm. recently I am encountering problems with analysis for Hull,due to which i cannot proceed further in my project.The problem i am facing is generation of waves in hull analysis. i am not able to generate waves for froud number 0.26. Kindly can some one help me to proceed further in my project. |
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January 31, 2013, 11:09 |
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#2 |
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Ryan Coe
Join Date: Jun 2010
Location: Albuquerque, NM
Posts: 98
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Hi Jerry,
Could you describe the problem you're having in a bit more detail? You say that you cannot generate waves for a Froude number of 0.26. Can you generate waves in different conditions? What sort of error messages are you getting? Also, there's a tutorial in the help manual titled "DFBI: Boat in Head Waves" that might be helpful.
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Ryan |
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January 31, 2013, 12:54 |
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#3 |
New Member
jerry thomas varghese
Join Date: Jan 2013
Posts: 5
Rep Power: 13 |
hello sir,
i am not actually familiar with wave generation in starccm. and also i am not sure whether the waves generated are by the hull or whether they are sea waves. we are actually doing analysis for kriso container ship and kp505 propeller. the propeller analysis was over,but i dont know how to proceed further with the hull,is there any specific tuitorial for it?? also what are the input values required for wave generation?? |
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January 31, 2013, 15:06 |
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#4 |
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Ryan Coe
Join Date: Jun 2010
Location: Albuquerque, NM
Posts: 98
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There is a tutorial for this type of analysis. Search for "DFBI: Boat in Head Waves" in the help manual.
Whether you simulate the ship in a flat water condition (where the only wave are those created by hull) or in a sea-state with waves is completely up to you.
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January 31, 2013, 15:53 |
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#5 |
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jerry thomas varghese
Join Date: Jan 2013
Posts: 5
Rep Power: 13 |
could you please tell me what all are the input values required while generating waves??
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February 1, 2013, 00:51 |
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#6 |
New Member
jerry thomas varghese
Join Date: Jan 2013
Posts: 5
Rep Power: 13 |
for the hull , i ran one analysis using 0.89million cells mesh size and without generating waves. i was supposed to get a value of 50N as resistance force but i got 110N.the analysis was done using AKN turbulence model. what has to done further to improve the results?
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February 1, 2013, 21:48 |
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#7 |
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KHB
Join Date: Aug 2010
Location: Singapore
Posts: 118
Rep Power: 15 |
Are you sure you have the correct sinkage and trim?
Do you have sufficient domain size? Maybe try different turbulence model? Does you simulation converge? |
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March 15, 2013, 05:27 |
numerical simulation of hull propeller interaction
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#8 |
New Member
jerry thomas varghese
Join Date: Jan 2013
Posts: 5
Rep Power: 13 |
i am having problem in generating multiphase in my project. air and water are used as the two phases.vof condition was used. but my results are not converging. can someone help me out.do i need to create udf for this problem.
the top surface of my domain and hull are touching or in the same plane. do i need any other inputs values. aslo what is the importance of froude number??why do we generally use that value?? |
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August 8, 2013, 10:29 |
propeller hull interaction
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#9 |
New Member
sasmech
Join Date: Aug 2013
Posts: 1
Rep Power: 0 |
hello
i am willing to work on hull propeller interaction. please tell me the feasibility of the project in Ansys-Fluent. is it possible to simulate the Ship having rotating propeller behind in the Fluent? and find out the drag Nil |
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