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Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

Online ISSN 1552-4485; Print ISSN 0033-569X

   
 
 

 

Interaction of elementary waves with a weak discontinuity in an isothermal drift-flux model of compressible two-phase flows


Authors: Minhajul and T. Raja Sekhar
Journal: Quart. Appl. Math. 77 (2019), 671-688
MSC (2010): Primary 35L45, 35L65, 58J45; Secondary 35Q35, 35L67, 76T10
DOI: https://doi.org/10.1090/qam/1539
Published electronically: April 16, 2019
MathSciNet review: 3962588
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Abstract: In this paper, we study the interaction of elementary waves of the Riemann problem with a weak discontinuity for an isothermal no-slip compressible gas-liquid drift flux equation of two-phase flows. We construct the solution of the Riemann problem in terms of a one parameter family of curves. Using the properties of elementary waves, we prove a necessary and sufficient condition on initial data for which the solution of the Riemann problem consists of a left shock, contact discontinuity, and a right shock. Moreover, we derive the amplitudes of weak discontinuity and discuss the interactions of weak discontinuity with shocks and contact discontinuity. Finally, we carry out some tests to investigate the effect of shock strength and initial data on the jump in shock acceleration and the amplitudes of reflected and transmitted waves.


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Additional Information

Minhajul
Affiliation: Department of Mathematics, Indian Institute of Technology Kharagpur, Kharagpur-721302, India
MR Author ID: 1232942
Email: minhaz@maths.iitkgp.ac.in

T. Raja Sekhar
Affiliation: Department of Mathematics, Indian Institute of Technology Kharagpur, Kharagpur-721302, India
MR Author ID: 831418
Email: trajasekhar@maths.iitkgp.ac.in

Received by editor(s): April 14, 2018
Received by editor(s) in revised form: January 30, 2019
Published electronically: April 16, 2019
Additional Notes: The first author is highly thankful to the Ministry of Human Resource Development, Government of India, for the institute fellowship (grant no. IIT/ACAD/PGS& R/F.II/2/14MA90J08).
Research support from the Science and Engineering Research Board, Department of Science and Technology, Government of India (Ref. No. SB/FTP/MS-047/2013) is gratefully acknowledged by the second author.
Dedicated: Dedicated to Professor V. D. Sharma on the occasion of his $70^{th}$ birthday
Article copyright: © Copyright 2019 Brown University