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Dive into the research topics where nan Rajeev is active.

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Featured researches published by nan Rajeev.


International Journal of Nonlinear Sciences and Numerical Simulation | 2009

A Fractional Predator-Prey Model and its Solution

S. Das; Praveen Kumar Gupta; Rajeev

A fractional Lotka-Volterra model is suggested, and its solution is obtained using the homotopy perturbation method. The effect of the fractional order on populations of the predator and the prey is discussed.


Applied Mathematics and Computation | 2011

An approximate analytical solution of one-dimensional phase change problems in a finite domain

S. Das; Rajeev

In this paper, we present an approximate analytical solution for solving one dimensional two phase Stefan problem. The finite sine transform technique is used to convert the non dimensional form from a space domain to a wave number domain. Inverse finite sine transform is used to obtain the desired solution. The location of moving interface during freezing process in a finite domain is studied and the result thus obtained are discussed graphically. The whole analysis is presented in a non dimensional form.


Applied Mathematical Modelling | 2013

Homotopy perturbation method for a limit case Stefan problem governed by fractional diffusion equation

Rajeev; Mohan Singh Kushwaha


International Journal of Heat and Mass Transfer | 2009

Numerical solution of a moving-boundary problem with variable latent heat

Rajeev; K.N. Rai; S. Das


Ain Shams Engineering Journal | 2013

An approximate solution to a moving boundary problem with space–time fractional derivative in fluvio-deltaic sedimentation process

Rajeev; Mohan Singh Kushwaha; Ajay Kumar


Journal of King Saud University - Science | 2018

A Stefan problem with variable thermal coefficients and moving phase change material

Abhishek K. Singh; Ajay Kumar; Rajeev


Journal of King Saud University - Science | 2018

A moving boundary problem with variable specific heat and thermal conductivity

Ajay Kumar; Abhishek K. Singh; Rajeev


Journal of Heat and Mass Transfer Research(JHMTR) | 2016

A study of a Stefan problem governed with space–time fractional derivatives

Rajeev; Mohan Singh Kushwaha; Abhishek Kumar Singh


Differential Equations and Dynamical Systems | 2016

Comparison Between Adomian Decomposition Method and Optimal Homotopy Asymptotic Method for a Two Moving Boundaries Problem

Rajeev; Mohan Singh Kushwaha


World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering | 2015

A Numerical Solution Based On Operational Matrix of Differentiation of Shifted Second Kind Chebyshev Wavelets for a Stefan Problem

Rajeev; N. K. Raigar

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S. Das

Indian Institute of Technology (BHU) Varanasi

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Ajay Kumar

Hong Kong Polytechnic University

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K.N. Rai

Indian Institute of Technology (BHU) Varanasi

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