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Dissipation function
The source term of the internal energy - The rate at which the kinetic energy is converted in to internal energy
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Navier Stokes Equation
Deriving Navier-Stokes equation from Newton's second law
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Energy equation in Three Dimension
Deriving the energy equation in 3-dimension includes work done by surface forces, heat flux due to heat conduction, and heat sources. We will derive an equation for temperature of incompressible fluids and enthalpy from the energy equation of compressible fluids.
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Momentum equation in a 3D particle and its surface & body forces
Deriving the momentum equation for a 3D particle and the forces acting on the surfaces & body.
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Law of Conservation of Momentum and Energy
Deriving the equations for energy, x-momentum, y-momentum, and z-momentum from the law of conservation of momentum and energy.
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Law of Conservation of Mass and Continuity Equation
Deriving the continuity equation for compressible and incompressible fluid from the law of conservation of mass with divergent rule.
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Heat Transfer
Different ways how the heat is transfered and its mechanism - Conduction, Convection, and Radiation
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Laplacian of velocity potential
Laplacian operator (Divergent of a Gradient of a scalar) and mass conservation
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Divergence of velocity vector
Divergence operator, significance of divergence, and divergence theorem
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Gradient of a Scalar
Gradient operator and significance of gradient
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HVAC duct air pressure loss
HVAC duct air pressure loss using Darcy Weisbach equation and Colebrook equation or Moody’s chart. Calculator to determine pressure loss without the help of a chart.
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Design For Manufacturing and Assembly(DFMA) principles of Sheet Metal Work
Design For Manufacturing and Assembly (DFMA) principles of Sheet Metal Work.
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Apparatus dew point temperature (ADP) & By-pass factor (BF)
Calculator and equations for the apparatus dew point temperature and by-pass factor of an air handling unit.
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AHU air side cooling load calculation
Calculator and equations for the Sensible load, latent load & total load calculation of an air handling unit.
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AHU water side cooling load calculation
Calculator and equations for the chilled water cooling load calculation of an air handling unit and its derivations.
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Air Handling Unit (AHU) performance calculation
Calculating water side energies, air side energies which includes capacity/tonnage, psychrometric properties, air flow rate, apparatus dew point temperature & by-pass factor.
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Air Handling Unit (AHU) Selection Guide
Selection guide & industrial standards for basic components of AHU's like, filters, coil, AHU panels and fans.
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Maths Number System
Basic aptitude questions in Real numbers, rational numbers, irrational numbers, integers, fractions, decimals, whole numbers, and natural numbers.
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Psychrometric calculator
Computing Psychrometric properties without chart and equations.
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Psychrometric chart and related equations
Plotting and resolving air properties with the help of psychrometric chart and resolving air properties with the help of equations.
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Bernoulli distribution & binomial trials
Definition of Bernoulli distribution, Bernoulli trials, p-value of Binomial trial, and related examples
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Divisibility Rule
Divisibility rule for 2, 3, 4, 5, 6, 8, 9 & 12
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Ozone Layer
An Introduction to Ozone Layer
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p-value
p-value the amount of unusual sample values
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Uniform distribution
Discrete & continuous models of uniform distribution
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Nginx with PM2 for NuxtJs
Nginx server blocks with PM2 configuration for NuxtJs application (Two NuxtJs applications running on single public IP)
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Standard deviation and Standard error
Introduction to mean, variance, standard deviation and standard error of a population
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China Covid-19 Corona virus data
Growth of spread & death
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World Covid-19 Corona virus data
Growth of spread & death
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India Covid-19 Corona virus data
Growth of spread & death
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Air Pollution data-Telangana, Sanathnagar, Hyderabad
A close look at the air pollution data taken from Sanathnagar, which explains PM2.5 levels for different seasons, time, weekday & weekend
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Air Pollution data - Tamil Nadu; Station: Alandur Bus Depot, Chennai - CPCB
A close look at the air pollution data taken from Alandur, which explains PM2.5 levels for different seasons, time, weekday & weekend
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Chilled water flows measurement using Orifice plate, Balancing valves, Manometers & Pitot tubes.
This article explains various methods of chilled water flow measurement viz, Using Balancing Vale/Orifice plate & Manometers, Using Balancing Vale & Manometers, Using a simple Pitot tube, Using Pitot tube with Piezometer & Using Pitot static tubes & DP Manometer.
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Amount of Moisture content in air
The amount of moisture content in the air can be represented in four ways, as illustrated below
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Atomic Mass and Avogadro Number
This document contains details of protons, neutrons, and electrons for various elements in the Periodic table. And it explains the use of the Avogadro number.
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Daltons Law
This document gives definitions of Daltons law and an explanation for calculating partial and total pressure using Ideal gas and Dalton's law
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Dew Point Temperature (DPT)
This document gives definition for Dew point temperature and a method to calculate it from the dry bulb temperature and the partial pressure of water vapour
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Humidity ratio (or) Specific humidity
This document describes the method of calculating the Humidity ratio using Dry bulb temperature and wet bulb temperature with the help of Daltons law
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Study of Moisture content in air - Pychrometry
Brief introduction about the study of moisture content in the air, which is called Psychrometry. Explains the basics of moist air properties.
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Relative Humidity (RH)
This document describes two different methods in calculating Relative Humidity using the Partial pressure of water vapor and the Humidity ratio at saturation
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Wet-bulb Temperature (WBT)
This document defines Wet-bulb temperature and describes how to measure it, and describes how to calculate Wet-bulb temperature from Dry-bulb temperature and Relative humidity.