How does an Aerofoil/Airfoil works?In case of aerofoil our preliminary objective is to maximize the lift force and minimizing the drag force.In case of wind turbines as the air strikes at the leading edge and flows over the upper camber the air has to cover the more path length as compared to the length over lower camber.And both the streamlines(upper and lower camber streamlines) should meet at ..read more

 Terminology related to Aerofoil/ AirfoilLeading edge: Part of the blade where high energy fluid strikes the blade first.Trailing edge: Part of the blade where the low energy fluid leaving the blade profile after giving energy to it.Upper camber: The convex surface of the unsymmetrical blade profile.Lower camber: The concave surface of the unsymmetrical blade profile.Chord line: line joining the ..read more

 What is an Aerofoil ?Aerofoil or Airfoil: It is an unsymmetrical blade with streamlined body in order to produce minimum drag force and maximum lift force.Maximum lift force is obtained through the pressure difference between upper chamber and lower camber. Upper camber is made smooth with ceramic coating i.e. high surface finish and lower camber is made rough and thus pressure difference is ..read more

 Valence shell electrons/extra electrons: Are the electrons of Valence shell/outermost orbital electrons for example the electronic configuration of copper metal is [Ne] 3d¹⁰ 4s¹ i.e. only one Valence electron. For example the electronic configuration of silicon semiconductor is [Ne] 3s² 3p² i.e. 4 Valence electrons. These electrons are basically responsible for current and heat.Free electrons ..read more

Riser: Riser is the most important gating element used in casting process. Riser is used to compensate the liquid and solidification shrinkage solidification process.cross sectional view of casting Functions of riser: Riser ensure the complete filling of if the cavity so that the sound casting can be produced. Clearly riser functions can be divided into four categories. Used to compensate ..read more

Stress Strain Curve for mild steelThis is the topic in which most of the students remain confused during whole engineering and i was too. one of the reason was that different books shown different diagrams and had their own explanation.So, which is correct? and whom we have to trust?Lets find out. Importance of stress strain diagram:This diagram is used to determine the different mechanical ..read more

What is strain?Lets discuss what will happen to a body when stress is induced in it. we know that stress in a body is induced when equilibrium forces are applied to it, either tensile or compressive. Below is the fig. shows the bar under compressive forces due to which compressive stress induced in it.Fig. 1- compressive forces applied to a barAs seen in the fig. when compressive forces are ..read more

what is solid waste? Solid waste: When any solid product (electronic gadget, Industrial solid waste, commercial solid waste, chemical or organic waste ) achieve it's useful life or it's of no use. It's is termed as solid waste. Solid waste management system: Waste generation: waste produced during the conversion of raw product into finished product. Waste storage: only for understanding ..read more

If you don't know basics of stress and strain you can read about these first from the link provided and then you will able to differentiate between different types of them.what is stress?So, what is the difference between these 3 types of stress?Types of stressBasic formula for calculating the stress remains same in all 3 cases and only cross sectional area will change. Stress =      applied ..read more

What is pressure? Pressure: As the term explained itself  the word pressure comes from the word press. Means pressing is always observed when force is applied only in perpendicular direction to a specified area. Let's try to understand the root cause of pressure: Pressure Basically pressure is created due to collision of molecules of fluid particles. Due to molecular ..read more