BTech -IIT Patna(Mech). Thermal Systems Engineer MRV, Chennai. Planning Msc(CFD) -US. GRE 325 TOEFL 112. Educator for the love of subject.  

Harnav Gill

The course covers concepts of Heat Mass Transfer with emphasis on both theory and numerical solving skills.

English

Heat Mass Transfer for GATE /BAARC/ISRO written exam and interviews

Introduction to Heat Transfer

Mechanics of condition heat transfer in solids liquids and gases. Intoduction to Fourier law of conduction

Physics behind Modes of Heat Transfer

In this lecture we explore physics behind convection and radiation along with rate laws. Also types of convection are covered

Physics behind Modes of Heat Transfer Part 2

The lectures covers thermal matter properties and their variation with temperature. Also General Heat Diffusion equation is also derived for Cartisean Coordinate system.

Conduction 1- Thermal Properties of Matter and Heat Diffusion Equation

Example for Heat Diffusion Equation. Types of Boundary Conditions and Heat Diffusion Equation for Other Coordinates.

Boundary Condition in Conduction and Heat Diffusion Equation in Other Coordinate Systems

This lesson covers 1-D steady state conduction in plane walls.

Conduction in plane walls

In this lecture we look at 1-d steady state conduction in geometries with variable area. Also we derive the Thermal Resistance value for cylindrical systems.

Conduction in Radial Systems-1

In this lesson we explore composite cylindrical systems. Very important topic of insulation thickness in cylindrical systems is also covered.

Conduction in Radial Systems-2

In this lecture resistance and insulation thickness for spherical systems is discussed along with illustrative example.

Conduction in Radial Systems-3

In this lecture we start with 1-D conduction with internal heat generation. We discuss about sources of internal heat generation and study the case of Plane Walls.

1-D Heat Conduction with Internal Heat Generation

We discuss the topic of internal heat generation in cylindrical systems

1-D Heat Conduction with internal heat generation in cylindrical systems.

Basic Introduction to extended surfaces and fins and discussion of properties of ideal fins

Heat Transfers in Fins-1

In this lecture we derive the general heat transfer equation for fins and start the analysis for fins with constant cross section area.

Heat Transfer in Fins-2

Basics of  Solutions to Second order homogeneous differential equations are covered followed by using the concepts to solve for heat transfer equation in fins with constant cross sectional area

Heat Transfer in Fins-3

Solution of heat transfer rates and temperature distribution for various boundary conditions for fin

Heat Transfer in Fins-4

This lecture covers could concepts of Fin effectiveness and Fin efficiency.

Efficiency and Effectiveness of Fins

Intoduction to Transient conduction and Lumped Capacitance Model

Transient Conduction-1

Validity of Lumped Mass Capacitance Model, Time constant, Biot Number, Fourier Number.

Transient Conduction-2

The lesson gives a brief description of convective heat transfer followed by introduction to boundary layers. Also fluid property of viscosity is also discussed.

Intoduction to Convection Heat Transfer

Theoretical description of Thermal and Velocity Boundary Layer

Velocity and Thermal Boundary Layers

Concepts of average and local heat transfer cofficients for convection

Local and Average Convection Cofficient

In this lecture we study about Reynolds Number and it's significance in studying various flow regimes.

Reynolds Number and Flow Regimes

Characteristics of Laminar, Turbulent and Transition Flow Regimes and difference in boundary layers in turbulent and Laminar cases.

Laminar Turbulent and Transitional Flow

Governing equations for Boundary Layers in Laminar Flow their Non-Dimensional Forms. Intoduction to Prandtl nunber

Boundary Layer Equations for Laminar Flow

Solution of flow parameters using normalised equations. Introduction to Prandtl and Nusselt Number

Prandtl and Nusselt Number

In this lecture we study about physical implications of Prandtl and Nusselt number. Also difference between Nu and Bi number is discussed

Prandtl and Nusselt Number-2

In this lecture we study convection in external flow. We solve the boundary layer equations for velocity boundary layer for a flat plate with isothermal conditions using Blasius Solution and determine the value of Boundary Layer Thickness and Friction Cofficient.

Convection in External Flows: Flat Plate

In this lecture we solve for Thermal Boundary Layer Parameters to get relations for Nusselt Number in isothermal Laminar Flow over a flat plate.

Convection in External Flows: Flat Plate-2

In this lesson we discuss relationship for turbulent and mixed boundary layers for isothermal Flow over a flat plate. Also we described relationship for flat plate with constant heat flux case. Finally we devised an algorithm to solve the problems relating to solution of convection in flat plates

Convection in External Flows: Flat Plate-3

Illustrative example to show how to approach problems of convection heat transfer in case of flow over flat plates.

Convection in External Flow-Solved Example

In this lecture we study about flow past cylinders. We discuss the flow parameters, separation point, Laminar to Turbulent Transition of flow. We also establish how heat transfer and Nu changes with all the above factors.

Heat Transfer in Flow Past Cylinder

In this lecture we discuss about basic properties of internal flows with focus on entrance length and it's significance

Convection in Internal Flows-1

In this lecture we derive the velocity field for internal flow in pipes and the general formulation of mean velocity.

Convection in Internal Flows: Velocity Analysis

In this lecture we derive hydrodynamic parameters like mean velocity, friction factor, pressure loss in an flow inside pipe

Convection in Internal Flows-3

In this lecture we study about thermal entrance region, mean temperature and indipendence of h wrt to x for an internal flow

Convection in Internal Flows: Thermal Considerations

In this lecture we study about constant temperature and constant heat flux cases in internal flows.

Temperature Distribution for Constant Temp and Constant Heat Flux Cases in Internal Flows

In this lecture we derive expression for mean temperature for constant heat flux and constant temperature condition s

Heat Transfer and Mean Temperature for flow in pipes

In this lecture we derive the values of Nusselt Number for constant heat flux and constant Temperature cases

Nusselt Number for flows inside pipes.

In this lecture we solve an illustrative example related to convection in internal flows

ILLUSTRATIVE Example: Internal Flows

In this lecture we learn about free convection and conditions leading to free convection in fluids

Natural Convection

In this lecture we study boundary layer formation in natural convection and governing equations for natural convection

Boundary layer and governing equations in natural convection

In this lecture we introduce non dimensional parameter for Free convection and also had a look at grashof number

Grashof Number in Natural convection

In this lecture we derive the value of Nusselt number for free convection

Lessons

43 lessons • 7h 26m

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Introduction to Heat Transfer

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Physics behind Modes of Heat Transfer

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Physics behind Modes of Heat Transfer Part 2

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Conduction 1- Thermal Properties of Matter and Heat Diffusion Equation

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Boundary Condition in Conduction and Heat Diffusion Equation in Other Coordinate Systems

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Conduction in plane walls

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Conduction in Radial Systems-1

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Conduction in Radial Systems-2

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Conduction in Radial Systems-3

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1-D Heat Conduction with Internal Heat Generation

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