2017-11-24 09:09 GMT

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IDProjectCategoryView StatusLast Update
0002752OpenFOAMFeaturepublic2017-11-09 09:06
Reporterbjnieuwboer 
Assigned To 
PrioritylowSeverityfeatureReproducibilityN/A
StatusnewResolutionopen 
PlatformGNU/LinuxOSUbuntuOS Version14.10
Product Version5.x 
Target VersionFixed in Version 
Summary0002752: function to determine first and last subcycle
DescriptionFor implementing own pieces of code, I often want to know if I am at the first or last subcycle in the particle tracking code. Currently, I've worked around this. However, I was wondering if it would help others if this would be implemented as two member functions of the time subcycle class.
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~0009012

will (manager)

Why do you need to do this? The point of sub-cycling is to abstract the act of subdividing the time-step. Providing information as to the index of the current subdivision seems at odds with the intended purpose.

~0009013

bjnieuwboer (reporter)

I am working in the kinematicParticle class. Here I want to compute the coefficient of restitution on the basis of incoming velocity. Therefore I need to compute this value only the first time step of the subcycling. I have a managed to do this in another way. However, for me it would have been easier to have a feature to determine the first or last subcycle. Therefore I thought others might be interested in something like this. This would enable more confinient programming on low level (say in the kinemeticParticle.). I thought this would make the life easier of other people who implement things here.

~0009016

will (manager)

Every other kinematic parcel model operates within the sub-steps. I am currently of the opinion that whatever impact your coefficient of restitution is representing should involve the velocities at the start and end of the sub-step, not the outer timestep.

Why is your model different? Why does it have to be aware of the position within the sub-cycling?
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-Issue History
Date Modified Username Field Change
2017-11-07 13:02 bjnieuwboer New Issue
2017-11-07 15:28 will Note Added: 0009012
2017-11-07 15:41 bjnieuwboer Note Added: 0009013
2017-11-09 09:06 will Note Added: 0009016
+Issue History