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Correct Answer : Neglect the internal points
Explanation : The method of characteristic is a three step procedure. The first step is to determine the characteristic lines. After this, we determine the compatibility equations based on whether the point is an internal or wall point, and finally, we solve for these equations point by point along the characteristic line.
Correct Answer : Option (A) : Fourier law
Explanation : Fourier law which is also known as the law of heat conduction is used to find out the heat flux at any point in the fluid. It is given by the formula:Where, heat flux is in the y – directionMinus sign indicates that the heat flows from high temperature to low temperature and thus q?y is in opposite direction to the temperature gradient.
Correct Answer : Option (B) : Decreases
Correct Answer : Option (C) : Shear stress law
Explanation : Newtonian fluids are characterized by those fluids that obey the shear stress law. Aeronautics domain makes use of newtonian fluids only (air, other gases). Those fluids that don’t obey shear stress law are known as non – newtonian fluids (blood).
