Welcome to the page of
Md.Raihan Ali Khan

Lecturer, Department of Mechanical Engineering, BUET

Mechanical Engineering

One of the broadest field of applied science
Consisting of Applied Mechanics, Fluid Mechanics and Heat Transfer

Applying the Laws of
Physics using Mathematics

A truth seeker approaches towards nature

Area of
Research

Graduate Research Assistant in
Macro-to-Micro scale Fluids Engineering Lab (MĪ¼FEL) of Dept. of ME, BUET

  • High Speed Flow


    High speed flow topics betrays the physics of compressible flow. The primary interests includes analyzing the flow fields and shockwave dynamics in high speed gas flow. Interaction of shockwaves with the boundary layers and effects of turbulence in supersonics flow are of great interests.

  • Viscous Flow


    The study of boundary layer theory and its effects are exciting as well as difficult to model theoretically. The classic book, "BOUNDARY LAYER THEORY" by Hermann Schlichting exhibits the challenges. The transition from laminar to turbulent boundary layer is a vital phenomena which is yet to understand properly. Solving the mighty Navier-Stokes equation in boundary layer rigion is also a thrilling study.

  • Turbulence


    In fluid dynamics, turbulence or turbulent flow is any pattern of fluid motion characterized by chaotic changes in pressure and flow velocity. It is in contrast to a laminar flow regime, which occurs when a fluid flows in parallel layers, with no disruption between those layers.

  • Applied Mathematics


    To study natural science, proficiency in mathematics is a must. Fundamental and applied fluid mechanics requires strong skills in mathematical techniques like perturbation methods, method of characteristics etc. Analytical Modelling of fluid dynamical problems is an elegant way of solving albeit practical application often demands quicker but approximate solutions, it also needs primary applied mathematics.

  • Theoretical Model


    Theoretical modelling is actually handling the problem analytically with the help of mathematical tools. This approach is found to be very superior for analyzing the flow field or actually knowing the physics. On the contrary, engineering applications often demands the relation among poerformance parameters or the necessary variables for complex geometry or systems. These type of problems are difficult to model rather experiments and simulations are effective choices. Again it is to be said that to know the real physics or to eshtablish a hypothesis regarding flow behave analytical modelling is very elegant

  • Experiments


    To know the inner physics of fluid flow it is a very old and effective way to actually making the flow occur in a suitable experimental setup. A wind tunnel with measurement system, shock tubes can enable a researcher doing high quality research. Experiments are performed in wind tunnels in Physical Fluid Dynamics research group of Dept. of ME, BUET

  • Simulation


    Simulation is used as a virtual experimental platform. With proper validation and reliable computational scheme it is used to handle fluid flow problems in compressible and incompressible flows with various turbulence models. RANS, LES, DES etc. are some simulation techniques incorporated in commercial packages used in PFD

  • Flow Field in a Supersonic Inlet Isolator


    As an udergraduate student I performed my undergraduate thesis on "Flow field characteristics in a supersonic inler isolator". Mainly simulation was done using K-Omega SST turbulence model in Ansys Fluent 14.5. The target of the study was to develop a 2 dimensional bump geometry to reduce Shockwave Boundary Layer Interaction in ramp increasing the isolator performance.

  • Exploring Nature to ANSWER "WHY??


    The vital motivation of research is to answer the question,"WHY?" I am not satisfied just doing or solving a problem rather I intend to know the inner nature of fluid mechanics. Perhaps some engineering application do not even require this but relating the fluid flow behave with their inner physics has always been a great interest of me.

  • Self-Satisfaction


    The first and foremost purpose of my research activities is self-satisfaction. I beleive the target of studying a topic is enough to be studying only. Real life problems or direct applications may be addressed as well but it is necessary for an enthusiast to have a tendency to just know. Feeling F = ma is important for a Nowtonian Mechanics expert.

  • Welfare of Society and Self


    As an academician one needs to continue the process of learning and teaching. Motivation of research works also includes being proficient in the area of expertise. This enables an individual to contribute to his country and himself. High quality research not only promotes knowledge and skills but also gets quick promotions.

List of
Publication


Renowned Journals in Fluid Mechanics & High Speed Aerodynamics

Conference Publications

4. Md. Raihan Ali Khan, A. B. M. Toufique Hasan, Effect of Geometric Modification on Flow and Performance Characteristics of a Supersonic Inlet Isolator, 32nd International Symposium on Shock Waves (ISSW32 2019), Singapore, 14-19 July, 2019. (Paper ID: 377), pp. 2739-2747 (doi:10.3850/978-981-11-2730-4_0377-cd)

3. Md. Raihan Ali Khan, Shadman Tahmid, and A.B.M. Toufique Hasan, "Control of shock/boundary-layer interaction in a supersonic inlet isolator using geometric modification", Proceedings of 12th International Conference on Mechanical Engineering (ICME 2017), Dhaka, Bangladesh, 20-22 December, 2017, Paper ID: 153. AIP Conference Proceedings 1980, 040013 (2018)

2. Md. Raihan Ali Khan, Shadman Tahmid, Sazin Ahmed and M A R Sarkar "Fabrication and Performance Study of a Radio Controlled Amphibious Vehicle with Dual Propulsion System", International Conference on Mechanical, Industrial and Energy Engineering (2016), Khulna, Bangladesh 26-27 December, 2016.

1. Nandita Chakrabarty Jhumur, Sourav Saha, Mir Jalal Ahmad, Md. Raihan Ali Khan, Shadman Tahmid "Unsteady Pure Mixed Convection inside Square Ventilated Cavity Containing Rotating Heated Cylinder", International Conference on Mechanical, Industrial and Energy Engineering (2016), Khulna, Bangladesh 26-27 December, 2016.































About
Myself

DOWNLOAD CV

  • M.Sc. in Mechanical Engineering

    October 2017 - Present
    Department of Mechanical Engineering
    Bangladesh University of Engineering and Technology (BUET)
    Thesis Supervisor: Professor Dr. A B M Toufique Hasan Thesis Topic: Shock Wave Interaction on Flexible Surfaces Courses Completed: Mechanics of Viscous Fluid, High Speed Aerodynamics, Mechanics of Inviscid Incompressible FLuid, Finite Element Methods
  • B.Sc. in Mechanical Engineering

    February 2013 - September 2017
    Department of Mechanical Engineering
    Bangladesh University of Engineering and Technology (BUET)
    Thesis Supervisor: Professor Dr. A B M Toufique Hasan Thesis Title: Flow Field Characteristics in a Supersonic Inlet Isolator....... Deans List and University Merit Scholarship in all terms and levels
  • Higher Secondary Certificate (H.S.C.)

    2010-2012
    Dhaka College, Dhaka
    Group: SCIENCE, Scholarship: Education Board Scholarship from Dhaka Board.
    Dhaka College is one of the most ancient college in Indian Subcontinent. Every year this college prepares highly competitative students who usually get admission in various renowned universities and medical colleges both in the country and abroad.
  • Secondary School Certificate (S.S.C.)

    2008-2010
    Government Laboratory High School, Dhaka
    Group: SCIENCE, Scholarship: Education Board Scholarship from Dhaka Board.
    Government Laboratory High School is one of the best boys high schools in Dhaka city. Being influenced by "ALO ARO ALO (Light and more Light)", the motto of school, teachers take great and intesive care of students for their upcoming future. Every year students secure outstanding grades in SSC examination.
  • Lecturer

    December 2017 - Present
    Department of Mechanical Engineering
    Bangladesh University of Engineering and Technology (BUET)

    Joining one's own department as a teacher is a great oppurtunity to serve the nation as well as getting involved with the academic program of the best engineering university in the country. Being in touch with highly qualified and experienced teachers and experts increases one's knowledge, administrative experience and leadership. Every term going in front of the young undergrads is really exciting.

  • Industrial Trainee

    January 2017
    Bangladesh Atomic Energy Commisssion

    In the final year of graduation I had the chance to attend one month training in Atomic Energy Research Eshtablishment (AERE), Savar, Dhaka, Bangladesh Atomic Energy Commission under the course ME 370: Industrial Training. It was a huge experience working in Center for Research Reactor (CRR) with atomic scientists and reactor engineers of the country.

Photo
Gallery

I like to read and collect books, specially rare books of various interests
Travelling is also a hobby of mine. A good friend a bag and a bus, I think that's enough.

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Contact

Students are welcome to come to my office for any queries regarding study.

Room No. ME 417(A)
ME Building (3rd Floor)
Bangladesh University of Engineering and Technology (BUET)
Dhaka-1000, Bangladesh

Email: raihankhan@me.buet.ac.bd, raihanalikhan19@gmail.com

Cell: (+88) 01551059497