Introduction : Basic spray processes, Factors controlling spray formation – Drop size and velocity distribution functions : Number distributions, Mass/volume distributions, Empirical distributions, Theoretical distributions – Sheet and ligament breakup : Instability analyses for ligaments and sheets, Design models based on instability analyses – Drop formation : Static and dynamic force balances, Continuity considerations, Secondary atomization, Collisions and coalescence – Drop motion and spray-surroundings interactions : Steady trajectories (gas turbines, spray cooling, paint sprays), Entrainment.

Drop evaporation : Steady evaporation, Unsteady evaporation, Convective effects – Internal fluid mechanics : Swirl atomizers, Impinging jet atomizers – External spray characteristics : Cone angle, Radial and circumferential mass flux distributions – Atomizer performance : Modern design models for pressure-swirl atomizers, impinging jet atomizers, transient pressure (Diesel) atomizers – Measurement techniques : Drop sizing by Malvern and P/DPA, Drop velocity by P/DPA, Mass flux distribution via patternators and P/DPA

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Course Curriculum

Introduction to sprays and their applications Details 50:11
Spatial versus Temporal Sampling Details 50:39
Spatial Vs Temporal Sampling example problem Details 39:1
Steady vs unsteady spray Details 38:39
Statistical measures on spray Details 51:27
Discussion on pdf and moments Details 52:18
Size velocity correlation Details 51:21
Discussion on Interfacial tension Details 50:43
Introduction to Atomizers and their design-1 Details 52:28
Introduction to Atomizers and their design-2 Details 52:10
Simple measurement techniques Details 51:28
Selection of atomizers Details 33:6
Spray measurement characteristics Details 47:15
Spray measurements techniques Details 48:37
Non-intrusive spray measurements techniques Details 50:32
Non-intrusive spray measurements techniques Details 53:50
Linear stability analysis – Introduction Details 52:5
Linear stability analysis- Kelvin-Helmhotz instability -1 Details 52:3
Linear stability analysis- Kelvin-Helmhotz instability -2 Details 50:11
Linear stability analysis- Kelvin-Helmhotz instability -3 Details 43:2
Linear stability analysis procedure Details 36:32
Linear stability analysis – Cylindrial jet instability-1 Details 51:8
Linear stability analysis – Cylindrial jet instability-2 Details 45:32
Linear stability analysis – Planar Liquid Sheet instability -1 Details 47:41
Linear stability analysis – Planar Liquid Sheet instability -2 Details 52:4
Design of pressure swirl atomizer-1 Details 48:45
Design of pressure swirl atomizer-2 Details 49:17
Design of pressure swirl atomizer-3 Details 50:50
Design of pressure swirl atomizer-4 Details 51:16
Secondary atomization-Dimensionless parameters Details 47:19
Secondary atomization-Modes of breakup-1 Details 41:14
Secondary atomization-Modes of breakup-2 Details 46:44
Multiphase modelling Details 0:45
Multiphase modelling Details 37:55
Multiphase flow modelling basics Details 48:30
Multiphase modelling – Selection of model-1 Details 40:46
Multiphase modelling – Selection of model-2 Details 52:5
Multiphase modelling – Governing equations Details 52:57
Droplet evaporation Details 51:24
Droplet combustion Details 50:45
Spray combustion Details 29:16

This course is delivered by NPTEL, is part of IIT Madras online courses.

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