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Index I-7<br />

piezometer tube, 50, 105, video V2.2<br />

U-tube, 51<br />

Mass, units of, 7<br />

Mass flowrate, 112, 189<br />

Material derivative, 157, 265<br />

Measurement, flow, see Flow measurement<br />

Mechanical efficiency, 659<br />

Mechanical energy equation, 232<br />

Meniscus, 51<br />

Mesh, 702<br />

Meter, flow, see Flow measurement<br />

Method of repeating variables, 336<br />

Method of superposition, 295, video V6.5<br />

Methods of description:<br />

Eulerian, 150<br />

Lagrangian, 150<br />

Micromanometer, 81<br />

Minor loss, 410, 415<br />

Minor loss coefficient, 415<br />

Mixed-flow machine, 647<br />

Mixed-flow pump, 671<br />

Mixing length, 405<br />

Model, 332<br />

definition, 354<br />

design conditions, 355<br />

distorted, 359, video V7.8, video V7.12,<br />

video V7.17, video V7.18<br />

scales, 358<br />

true, 359<br />

Modeling laws, 355<br />

Model studies, 360, video V7.1, video V7.9,<br />

video V7.18, video V7.19, video V7.20<br />

Moment of inertia, 59<br />

of common areas, 60<br />

Moment of momentum, 215, 217, 651, video V5.11<br />

Momentum:<br />

angular, see Moment of momentum<br />

linear, see Newton’s second law of motion<br />

Momentum coefficient, 210<br />

Momentum equation:<br />

for differential control volume, 276<br />

for finite control volume with constant<br />

velocity, 213<br />

for inertial finite control volume, 201, 213<br />

for inviscid flow, 278<br />

for viscous flow, 307<br />

Momentum flux, 201<br />

Momentum integral equation, 478<br />

boundary layer with nonzero pressure gradient, 492<br />

boundary layer with zero pressure gradient, 479<br />

Momentum thickness, 474<br />

Moody, L., 29, 412<br />

Moody chart, 412, 413<br />

Moving grid, 704<br />

Multiple pipe system, see Pipe systems<br />

Nappe, 561<br />

Navier, L., 28, 308<br />

Navier–Stokes equations:<br />

cylindrical coordinates, 308<br />

rectangular coordinates, 307<br />

Net positive suction head:<br />

available, 660<br />

required, 660<br />

Newton, 7<br />

Newton, I., 27, 28<br />

Newtonian <strong>fluid</strong>, 15, 306<br />

Newton’s law of viscosity, 422<br />

Newton’s second law of motion, 94, 200, 276<br />

Noncircular duct, 425<br />

Noninertial reference frame, 201<br />

Nonisentropic flow of an ideal gas, 609<br />

Non-Newtonian <strong>fluid</strong>, 16, video V1.6<br />

Nonuniform flow, 236, 535<br />

Normal acceleration, 95, 164, video V3.1, video V3.4<br />

Normal depth, 550<br />

Normal shock, 608, 626, video V11.6,<br />

video V11.7<br />

basic equations for, 626<br />

graph for calculation of, 724<br />

T–s diagram, 627<br />

Normal stress, 224, 276<br />

in a Newtonian <strong>fluid</strong>, 15, 306<br />

work, 224<br />

No-slip condition, 15, 297, 309, video V1.4,<br />

video V6.11, video V6.12<br />

Nozzle:<br />

choked flow in, 597<br />

converging, 595<br />

converging–diverging, 595 video V11.6<br />

definition, 110<br />

incompressible flow through, 421<br />

normal shock in, 608<br />

overexpanded, 608, video V11.5, video V11.6<br />

underexpanded, 608, video V11.6<br />

Nozzle discharge coefficient, 443<br />

Nozzle meter, 119, 442<br />

Numerical methods, 318, video V6.14<br />

Nutating disk meter, 446, video V8.14<br />

Oblique shock wave, 608, 635, video V1.8,<br />

video V11.5, video V11.6<br />

One-dimensional flow, 151<br />

One-equation model, 409<br />

Open-channel flow:<br />

critical flow, 534, 540<br />

depth variation, 545<br />

energy equation for, 541<br />

gradually varied flow, 535, 554<br />

hydraulic jump, 556, video V10.11, video V10.12<br />

laminar, 535<br />

Manning equation for, 549<br />

most efficient, 554<br />

normal depth, 550<br />

rapidly varied flow, 535, 555, video V10.8<br />

surface wave propagation, 536<br />

uniform flow, 535, 546<br />

varied flow, 535, video V10.6<br />

Open channels:<br />

characteristics of, 535, video V10.6<br />

geometric properties of, 546, video V10.7<br />

optimum cross sections, 554<br />

regimes of flow in, 536<br />

shear stress in, 547<br />

velocity contours in, 547<br />

Orifice:<br />

flow through, 111<br />

Orifice discharge coefficient, 442

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