GATE Syllabus

# GATE 2025 Fluid Mechanics Syllabus (XE-B)

GATE 2025 Fluid Mechanics Syllabus (XE-B) gives you details of the latest GATE syllabus for the subject released by the official gate organizing institute IIT Roorkee 2025. We also created an easy-to-use ad-free mobile app for the GATE syllabus, previous year papers with keys, gate calculator, virtual calculator, and more. Download iStudy App for all GATE preparation needs.

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## GATE 2025 Fluid Mechanics Syllabus (XE-B)

#### Section 1: Flow and Fluid Properties

Fluid Properties: Density, viscosity, surface tension, relationship between stress and strain-rate for Newtonian fluids.
Classification of Flows: Viscous versus inviscid flows, incompressible versus compressible flows, internal versus external flows, steady versus unsteady flows, laminar versus turbulent flows, 1-D, 2-D and 3-D flows, Newtonian versus non-Newtonian fluid flow.
Hydrostatics: Buoyancy, manometry, forces on submerged bodies and its stability.

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#### Section 2: Kinematics of Fluid Motion

Eulerian and Lagrangian descriptions of fluid motion. Concept of local, convective and material derivatives. Streamline, streakline, pathline and timeline.

#### Section 3: Integral Analysis for a Control Volume

Reynolds Transport Theorem (RTT) for conservation of mass, linear and angular momentum.

#### Section 4: Differential Analysis

Differential equations of mass and momentum for incompressible flows.
Inviscid flows – Euler equations and viscous flows – Navier-Stokes equations.
Concept of fluid rotation, vorticity, stream function and circulation.
Exact solutions of Navier-Stokes equations for Couette flow and Poiseuille flow, thin film flow.

#### Section 5: Dimensional Analysis

Concept of geometric, kinematic and dynamic similarity.
Buckingham Pi theorem and its applications.
Non-dimensional parameters and their physical significance – Reynolds number, Froude number and
Mach number.

#### Section 6: Internal Flows

Fully developed pipe flow.

Empirical relations for laminar and turbulent flows: friction factor, Darcy-Weisbach relation and Moody’s chart.
Major and minor losses.

#### Section 7: Bernoulli’s Equation and its Applications, Potential Flows

Bernoulli’s equation: Assumptions and applications.
Flow measurements – Venturi meter, Pitot-static tube and orifice meter.
Elementary potential flows: Velocity potential function.
Uniform flow, source, sink and vortex, and their superposition for flow past simple geometries.

#### Section 8: External Flows

Prandtl boundary layer equations: Concept and assumptions.
Boundary layer characteristics: Boundary layer thickness, displacement thickness and momentum thickness.
Qualitative idea of boundary layer separation, streamlined and bluff bodies, and drag and lift forces.

If you are preparing for GATE, download iStudy Mobile App for all GATE Syllabus, Previous Question Papers and Keys, preparation guide, Exam updates, Gate Virtual calculator, Gate Score calculator, and IITs & NITs cutoffs. It is a lightweight, easy to use, no images, and no ads platform to make students’ lives easier.
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#### GENERAL APTITUDE (Common for all branches)

Verbal Aptitude

Basic English Grammar
Tenses, articles, adjectives, prepositions, conjunctions, verb-noun agreement, and other parts of speech

Basic Vocabulary
Words, idioms, and phrases in context

Narrative Sequencing

Quantitative Aptitude

Data Interpretation
Data graphs (bar graphs, pie charts, and other graphs representing data), 2- and 3-dimensional plots, maps, and tables

Numerical Computation and Estimation
Ratios, percentages, powers, exponents and logarithms, permutations and combinations, and series

Mensuration and Geometry

Elementary Statistics and Probability

Analytical Aptitude

Logic
Deduction and Induction

Analogy

Numerical Relations and Reasoning

Spatial Aptitude

Transformation of Shapes
Translation, rotation, scaling, mirroring, assembling, and grouping

Paper folding, cutting, and patterns in 2 and 3 dimensions

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## 1 Comment

1. khaja salahuddin

please send me which book is to be referred for preparing to gate exam.