external force

armin najarian · June 5, 2016, 03:45

hi.
i have a boat that it has 6 degree of freedom and i want to give it an external force in the direction of the longitudinal axis of the boat? (instead of modeling its propeller)
so i need to write an expression for the external force and as i said my problem is 6dof.
at first i wanted to define a coordinate that moves with the rigid body. but i could not define coordinate like that.
so how should i give the boat an external force that always be in the direction of the longitudinal axis of the boat?

federicabi · June 15, 2016, 07:48

Sorry, wrong section

June 5, 2016, 03:45	external force	#1
armin najarian New Member armin najarian Join Date: Aug 2015 Posts: 14 Rep Power: 11	hi. i have a boat that it has 6 degree of freedom and i want to give it an external force in the direction of the longitudinal axis of the boat? (instead of modeling its propeller) so i need to write an expression for the external force and as i said my problem is 6dof. at first i wanted to define a coordinate that moves with the rigid body. but i could not define coordinate like that. so how should i give the boat an external force that always be in the direction of the longitudinal axis of the boat?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
ActuatorDiskExplicitForce in OF2.1. Help	be_inspired	OpenFOAM Programming & Development	10	September 14, 2018 12:12
External force in mdFoam	Hashemkabir	OpenFOAM Running, Solving & CFD	0	July 8, 2015 09:51
WILLING TO PAY/ FREELANCER REQUIRED / small UDF coding force loads over body / 6DOF	acasas	CFD Freelancers	1	January 23, 2015 08:26
CGNS Compiling	Diego	Main CFD Forum	17	December 21, 2014 02:40
Force can not converge	colopolo	CFX	13	October 4, 2011 23:03

June 15, 2016, 07:48		#2
federicabi Member Federica Biano Join Date: Feb 2016 Location: Genova, Italy Posts: 39 Rep Power: 10	Sorry, wrong section