INTRODUCTION TO FLUID MECHANICS
LATEST NEW QUESTIONS AND VERIFIED ANSWERS GRADED A+
1.Fluid Mechanics - correct answer =The study of the behavior
... [Show More] of fluids at rest or in motion
2.Fluid Statics - correct answer =The study of fluids at rest or stationary, focusing on pressure distribution and forces on submerged surfaces.
3.Fluid Dynamics - correct answer =The study of fluids in motion, including the analysis of flow patterns and forces acting on the fluid.
4.Shear Stress - correct answer =A stress that acts parallel to a surface, causing deformation within the fluid.
5.Cohesion - correct answer =The attractive force that holds molecules of a fluid together, influencing its behavior.
6.Viscosity - correct answer =A measure of a fluid's resistance to flow, representing internal stickiness and friction, affecting fluid behavior.
7.No-Slip Condition - correct answer =The condition where fluid particles adhere to boundaries, resulting in zero velocity relative to the boundary, crucial in understanding fluid flow near surfaces.
8.Viscous Flow - correct answer =Fluid flows involving significant frictional effects due to viscosity, influencing the flow behavior.
9.Inviscid Flow - correct answer =Fluid flows where viscous forces are negligibly small compared to inertial or pressure forces, simplifying flow analysis.
10.Internal Flow - correct answer =The flow of a fluid completely bounded by solid surfaces, dominated by viscosity and boundary effects.
11.External Flow - correct answer =The flow of an unbounded fluid over a surface, where viscous effects are limited to boundary layers and wake regions, important in aerodynamics and fluid dynamics.
12.Incompressible Flow - correct answer =A flow where the density remains nearly constant throughout, simplifying flow analysis for many practical applications.
13.Mach Number - correct answer =A dimensionless number used to determine compressibility of flow, crucial in analyzing high-speed flows.
14.Reynolds Number - correct answer =A dimensionless parameter relating inertial forces to viscous forces, determining flow regime and behavior.
15.Steady Flow - correct answer =Flow with no change of properties at a point with time
16.Unsteady Flow - correct answer =Flow with changing properties at a point with time
17.One-Dimensional Flow - correct answer =Flow where the velocity varies in one space coordinate
18.Two-Dimensional Flow - correct answer =Flow where the velocity varies in two space coordinates, encountered in various fluid dynamics scenarios.
19.Three-Dimensional Flow - correct answer =Flow where the velocity varies in three space coordinates, representing complex fluid flow scenarios.
20.Control Volume - correct answer =A given region of space through which mass flows, allowing mass transfer across its boundary, fundamental in fluid mechanics analysis.
21.Closed System - correct answer =A system that always contains the same matter, with no transfer of mass across its boundary, important in thermodynamics and fluid mechanics.
22.Dimensions - correct answer =Measures by which physical variables are expressed qualitatively, such as length, time, and mass, crucial in formulating physical laws and equations.
23.Units - correct answer =Particular ways of attaching numbers to qualitative dimensions, used to describe various fluid characteristics and properties.
24.Newton - correct answer =The SI unit of force, where 1N = 1kg * 1m/s^2, fundamental in understanding forces and dynamics in fluid mechanics.
25.Pound of Force - correct answer =The force which when applied to a mass of 1 slug produces an acceleration of 1 ft/s^2, used in some engineering contexts.
26.Unity Conversion Ratios - correct answer =Ratios used to convert between different unit systems, essential for accurate measurement and analysis in fluid mechanics.
27.Principle of Dimensional Homogeneity - correct answer =The requirement that all additive terms in a physical equation must have the same dimensions, fundamental in formulating and analyzing physical equations. [Show Less]