Bearing Pressure plot

devesh.baghel · June 12, 2010, 10:17

Hi guys,

I am simulating lubricant flow in journal bearing case. I want to plot the pressure values in terms of Theta (angle) around journal. I have a reference point on the periphery of journal which will act as an angle Zero degree. Now from this point I want to plot pressure around periphery of journal. please help me to do that.

THanks in advance. with profound hope looking for reply asap.

hosseinhgf · September 24, 2010, 11:43

hi
i work with cfx.if it it is useful
first create new experssion then new variable.
i use this experssion but it start at x=0,y=0
"step(x/1[m])*step(y/1[m])*(asin(abs(y)/0.01905[m]))+
step(-x/1[m])*step(y/1[m])*(pi-asin(abs(y)/0.01905[m]))+
step(-x/1[m])*step(-y/1[m])*(pi+asin(abs(y)/0.01905[m]))+
step(x/1[m])*step(-y/1[m])*(2*pi-asin(abs(y)/0.01905[m]))"
0.01905 is my radius.
if you can change it to start from the desirable theta please tell me.
and if possible tell me about your simulation.

June 12, 2010, 10:17	Bearing Pressure plot	#1
devesh.baghel Member Devesh Baghel Join Date: Mar 2009 Posts: 84 Rep Power: 17	Hi guys, I am simulating lubricant flow in journal bearing case. I want to plot the pressure values in terms of Theta (angle) around journal. I have a reference point on the periphery of journal which will act as an angle Zero degree. Now from this point I want to plot pressure around periphery of journal. please help me to do that. THanks in advance. with profound hope looking for reply asap.

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September 24, 2010, 11:43		#2
hosseinhgf Member h-h Join Date: Sep 2009 Posts: 38 Rep Power: 16	hi i work with cfx.if it it is useful first create new experssion then new variable. i use this experssion but it start at x=0,y=0 "step(x/1[m])step(y/1[m])(asin(abs(y)/0.01905[m]))+ step(-x/1[m])step(y/1[m])(pi-asin(abs(y)/0.01905[m]))+ step(-x/1[m])step(-y/1[m])(pi+asin(abs(y)/0.01905[m]))+ step(x/1[m])step(-y/1[m])(2*pi-asin(abs(y)/0.01905[m]))" 0.01905 is my radius. if you can change it to start from the desirable theta please tell me. and if possible tell me about your simulation.