[overture] Re: rigid body motion
- From: Joel Guerrero <joegi.geo@xxxxxxxxx>
- To: overture@xxxxxxxxxxxxx
- Date: Tue, 6 Apr 2010 03:22:37 -0700 (PDT)
Hi Bill,
Two questions. I was checking the function where the forces are computed (in
InsParameter.C), and I wonder why do you multiply the pressure by the fluid
density (see getNormalForce)?
Between the euler and leapfrog method in RigodBodyMotion, which one gives
better results?
regards,
Joel
----- Original Message ----
From: Bill Henshaw <henshaw@xxxxxxxx>
To: overture@xxxxxxxxxxxxx
Sent: Thu, April 1, 2010 8:47:29 PM
Subject: [overture] Re: rigid body motion
Yes!
Joel Guerrero wrote:
> Hi Bill,
>
>
> The forces used in RigidBodyMotion.C are the forces computed in MovingGrids.C?
>
>
> Joel
>
>
>
> ----- Original Message ----
> From: Bill Henshaw <henshaw@xxxxxxxx>
> To: overture@xxxxxxxxxxxxx
> Sent: Thu, April 1, 2010 5:52:36 AM
> Subject: [overture] Re: rigid body motion
>
> Joel,
> It seems that you just need to change the Newton-Euler quations
> RigidBodyMotion.C
> in functions integrate and correct.
>
> Regards,
> Bill
>
> Joel Guerrero wrote:
>> Hi,
>>
>> Specifically I want to to model a spring-damper-mass system, where the
>> forces (let say the vertical force) is calculated as follow: m*a+k*v+c*y=fy
>> plus an additional derivate in the RHS. Currently and if I am not mistaken,
>> the forces are computed as fy = m*a, hence, I want to modify the way fy is
>> computed by adding the additional terms.
>>
>> Regards,
>>
>> Joel
>>
>>
>>
>> ----- Original Message ----
>> From: Bill Henshaw <henshaw@xxxxxxxx>
>> To: overture@xxxxxxxxxxxxx
>> Sent: Wed, March 31, 2010 12:42:50 AM
>> Subject: [overture] Re: rigid body motion
>>
>> Hi Joel,
>> I wonder if you can be more specific on what exactly you want to do?
>>
>> Regards,
>> Bill
>>
>> Joel Guerrero wrote:
>>> Hi,
>>>
>>> I have to modify the way forces are computed for rigid body motion, I
>>> wonder which files should I modify (rigidbodymotion or movinggrids)? What
>>> I need is to add three more derivatives to the way that forces are compute.
>>> Any suggestion will be appreciated.
>>>
>>> Cheers,
>>>
>>> joel
>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>
>
>
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