Dissertations/Theses - Department of Mathematics: Recent submissions

Now showing items 21-40 of 202

Numerical study of the impact of baffle on flow and heat transfer inside a skewed enclosure

Hasan, Md. Shamim (Department of Mathematics (Math), 2022-04-17)

The effectiveness of natural convection heat transfer in a skewed enclosure is investigated in this study with respect to variations of baffle lengths and the skew angles.The non-dimensional governing equations aresolved ...
Effects of magnetic field on mixed convection around a rotating cylinder inside a corner heated lid-driven enclosure filled with nanofluid

Roy, Sourav (Department of Mathematics, 2022-05-20)

The mixed convection flow and heat transfer characteristics inside a partially heated lid- driven enclosure with magnetic field, rotating solid circular cylinder at the center of the enclosure have been investigated ...
Analysis of soliton solutions to the nonlinear schrodinger and konopelchenko-dubrovsky equations

Arafat, S. M. Yiasir (Department of Mathematics, 2023-03-05)

Many phenomena in the real world are described by nonlinear evolution equations (NLEEs), which have recently gained popularity. In this dissertation, we have explored two NLEEs to develop the generic and compatible closed ...
Role of diffusion strategies and harvesting in competition for spatially distributed populations in a heterogeneous environment

Ishrat Zahan (Department of Mathematics, BUET, 2022-10-23)

The loss and degradation of habitat, Allee effects, climate change, deforestation, hunting-overfishing, and human disturbances are alarming and significant threats to the extinction of many species in ecology. In this ...
Numerical simulation over a nanofluid flow kinetics in a square duct driven by exothermic chemical reaction

Hasan, Md. Mehedi (Department of Mathematics, 2021-09-08)

The present research has intended numerically the unsteady laminar natural convective flow within nanofluid-filled square cavity under the action of the exothermic chemical reaction. As the exothermic chemical reaction is ...
Modeling of mixed convection for double-pipe heat exchanger in a partially cooled enclosure

Keya, Shuraiya Tasnuva (Department of Mathematics, 2021-08-16)

In this thesis, mixed convection heat transfer for double-pipe heat exchanger in a partially cooled-enclosure has been investigated numerically. The upper lid of the cavity is considered to be moving and a hollow cylinder ...
Stability analysis of jeffery-hamel similarity solution and its relation to flow in a diverging channel

Khan, Al-Maruf (Department of Mathematics, 2021-03-07)

Stability analysis of Jeffery-Hamel similarity solution and its relation to flow in a Diverging Channel is studied numerically in this thesis. Numerical results are presented for the two-dimensional flow in a wedge separated ...
Numerical investigation of operating conditions to improve the entropy of silica gel-water driven solar adsorption chiller

Jahan, Nusrat (Department of Mathematics, 2015-10)

Solar powered adsorption cooling system had been investigated with different adsorbate/ adsorbent pair. This thesis deals with the numerical investigation of operating conditions to improve the entropy of silica gel water ...
Analysis of boundary layer flow over a bullet-shaped object with a quasi-linearization iterative scheme

Ali, Mohammad (Department of Mathematics, 2021-03-28)

The two-dimensional steady and unsteady incompressible axisymmetric mixed convection magnetohydrodynamic boundary layer flow with heat transfer over a power-law stretching bullet-shaped object has been investigated. The ...
Study on semisimple rings and modules

Siddiqua, Fatema (Department of Mathematics, 2021-08-14)

In this thesis, we characterize semisimple modules over noncommutative rings and investigate their properties. We discuss noncommutative rings and their modules based on the Wedderburn-Artin structure theorem. Focusing on ...
Three-dimensional numerical study for hepatic tumor ablation using electric current and bioheat transfer

SAWMPA, SAIMA AKTER (Department of Mathematics, 2021-07-12)

In this research, the finite-element method (FEM) analysis has employed in the determination of distribution of tissue temperature during radiofrequency hepatic tumor ablation. We have investigated three dimensional (3D) ...
Computational techniques for riccati-based feedback stabilization of large-scale sparse index-2 descriptor system

Islam, Md. Toriqul (Department of Mathematics, 2021-03-06)

This thesis mainly focuses on computational techniques applied to stabilize unstable Navier-Stokes models. The models arising from the Navier stokes equation are an essential aspect in engineering applications and applied ...
Numerical investigation on electrical and thermal performance of photovoltaic thermal system in Bangladesh

Tuz-Zohora, Fatema (Department of Mathematics, 2021-11-29)

In this thesis, a three-dimensional numerical model of a photovoltaic thermal (PVT) system is considered and solved using the finite element method. Numerical simulation is used to explore the impact of solar irradiation ...
Analysis of magnetohydrodynamic mixed convection nanofluid flow in a lid-driven porous rectangular cavity with three square heating blocks

Kabir, Md. Humaun (Department of Mathematics, 2019-09-28)

Analyses of magnetohydrodynamic mixed convection nanofluid flow in a lid-driven porous rectangular cavity with three square heating blocks are carried out. The current geometry are analyzed numerically by finite element ...
Numerical study of natural convection heat transfer in a trapeziform cavity filled with nanofluids

Rahman, Md. Faizar (Department of Mathematics, 2021-12-06)

The present research has intended numerically the steady of laminar natural convective flow and heat transfer in a trapeziform cavity filled with nanofluid. The heat transferring medium has been taken as water-ferrosopherric ...
New quadratic formulation and advanced transformation technique to solve multi objective quadratic programming problem

Yesmin, Margia (Department of Mathematics, 2021-09-28)

Multi-objective optimization problem (MOOP) is an important class of optimization problem that ensures users to model a large variety of real world applications. A survey of quadratic programming is presented in corporate ...
Inventory analysis for deteriorating items deploying preserrvation technology with time dependent quadratic demand function

RAHMAN, MD. ATIQUR (Department of Mathematics, 2021-02-03)

The effect of deterioration is very important in many inventory systems. Most of the physical goods undergo decay or deterioration over time. Preservation technology is a system which helps to reduce the rate of deterioration ...
Numerical study of microwave cancer therapy for liver tissue using bioheat model

Biswas, Chaity (Department of Mathematics, 2021-07-18)

A numerical study of microwave cancer therapy for liver tissue with an elliptic tumor cell has been carried out by this thesis. The electromagnetic wave frequency and the bio-heat transfer equations have been used for ...
Numerical solution of higher order boundary value problem by exp-function method

Rahman, Md. Oliur (Department of Mathematics, 2021-03-03)

Higher order boundary value problem which are known to arise in the study of astrophysics, hydrodynamic and hydromagnetic stability, fluid dynamics, astronomy, beam and long wave theory, engineering and applied physics. ...
Some characterizations of twin prime numbers and their application

Naser, S. M. (Department of Mathematics, 2021-08-09)

Letting Bertrand’s Postulate, Goldbach’s Conjecture and Chen’s theorem as base theorems, we find some new results. This research work proposes a theorem that every even number greater than 6 can be written as a sum of two ...

Now showing items 21-40 of 202

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