Solving shallow water equations with crisp and uncertain initial conditions. Issue 12 (3rd December 2018)

• Record Type: Journal Article
• Authors: Karunakar, Perumandla; Chakraverty, Snehashish
• Is Part Of: International journal of numerical methods for heat & fluid flow. Volume 28:Issue 12(2018)
• Page Start: 2801
• Page End: 2815
• Publication Date: 2018-12-03
• Subjects: Basin depth -- Parametric form -- r-cut -- Fuzzy shallow water equations (FSWEs) -- Triangular fuzzy number (TFN); Heat -- Transmission -- Mathematics -- Periodicals; Fluid dynamics -- Mathematics -- Periodicals; 536.2
• DOI: 10.1108/HFF-09-2017-0351
• Languages: English
• ISSNs: 0961-5539

Abstract

Abstract : Purpose: This paper aims to deal with the application of variational iteration method and homotopy perturbation method (HPM) for solving one dimensional shallow water equations with crisp and fuzzy uncertain initial conditions. Design/methodology/approach: Firstly, the study solved shallow water equations using variational iteration method and HPM with constant basin depth and crisp initial conditions. Further, the study considered uncertain initial conditions in terms of fuzzy numbers, which leads the governing equations to fuzzy shallow water equations. Then using cut and parametric concepts the study converts fuzzy shallow water equations to crisp form. Then, HPM has been used to solve the fuzzy shallow water equations. Findings: Results obtained by both methods HPM and variational iteration method are compared graphically in crisp case. Solution of fuzzy shallow water equations by HPM are presented in the form triangular fuzzy number plots. Originality/value: Shallow water equations with crisp and fuzzy initial conditions have been solved.