1. JNCiR :: JNCASR Institutional Repository
  2. Engineering Mechanics Unit (EMU)
  3. Faculty Publications (EMU)
  4. Meheboob Alam
  5. Research Articles (Meheboob Alam)
Please use this identifier to cite or link to this item: https://libjncir.jncasr.ac.in/xmlui/handle/10572/2439
Full metadata record
DC FieldValueLanguage
dc.contributor.authorRongali, Ramakrishna
dc.contributor.authorAlam, Meheboob
dc.date.accessioned2017-02-21T07:03:03Z-
dc.date.available2017-02-21T07:03:03Z-
dc.date.issued2014
dc.identifier.citationRongali, R; Alam, M, Higher-order effects on orientational correlation and relaxation dynamics in homogeneous cooling of a rough granular gas. Physical Review E 2014, 89 (6), 62201 http://dx.doi.org/10.1103/PhysRevE.89.062201en_US
dc.identifier.citationPhysical Review Een_US
dc.identifier.citation89en_US
dc.identifier.issnThe orientational or angular correlation between the directions of the translational and rotational motions is analyzed theoretically for the homogeneous cooling state of a rough granular gas. The dynamical equations are derived using an approximate form of the single-particle distribution function that incorporates angular correlations. The goal is to assess the effects of higher-order angular corrections for which both quadratic- and quartic-order terms (in translational and rotational velocities of particles) are retained in the perturbation expansion of the distribution function. We show that higher-order corrections can markedly affect the steady-state orientational correlation when the normal restitution coefficient is moderate or small, and this effect is more prominent for nearly smooth particles. The transient evolution of orientational correlation is found to be significantly affected by higher-order terms. In particular the higher-order orientational correlations can dominate over the leading-order contribution during short times even in the quasi-elastic limit, although the steady correlation remains unaffected by such corrections in the same limit. The buildup of correlations during the transient stage seems to be closely tied to the evolution of the ratio between the rotational and translational temperatures. It is demonstrated that the transient dynamics of the temperature ratio and its steady state remain insensitive to higher-order angular correlation.
dc.identifier.urihttps://libjncir.jncasr.ac.in/xmlui/10572/2439-
dc.descriptionhttp://dx.doi.org/10.1103/PhysRevE.89.062201en_US
dc.description.abstract@American Physical Society, 2014en_US
dc.description.uri2470-0045en_US
dc.description.uri2470-0053en_US
dc.language.iso6en_US
dc.publisherEnglishen_US
dc.rightsAmerican Physical Societyen_US
dc.subjectFluids & Plasmas Physicsen_US
dc.subjectMathematical Physicsen_US
dc.subjectKinetic-Theoryen_US
dc.subjectElastic Spheresen_US
dc.subjectShear-Flowen_US
dc.subjectParticlesen_US
dc.subjectStabilityen_US
dc.subjectFrictionen_US
dc.subjectVelocityen_US
dc.subjectEnergyen_US
dc.subjectFluiden_US
dc.subjectStateen_US
dc.titleHigher-order effects on orientational correlation and relaxation dynamics in homogeneous cooling of a rough granular gasen_US
dc.typeArticleen_US
Appears in Collections:Research Articles (Meheboob Alam)

Files in This Item:
File Description SizeFormat 
116.pdf
  Restricted Access		2.85 MBAdobe PDFView/Open Request a copy
Show simple item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.