1、Cauchy-Reimam condition柯西黎曼条件center of pressure压强中心coefficient系数coefficient of compressibility压缩系数coefficient of eddy viscosity涡流粘性系数coefficient of viscosity粘度粘性系数cohesive forces粘附力combined boundary layer组合边界层completely rough zone of turbulent pipe flow紊流粗糙管平方阻力区component velocity合速度compressibility压
2、缩性compressiblefluid可压缩流体conservation equation of energy能量守恒方程conservation equation of mass质量守恒方程conservation of mechanical energy机械能守恒conservation of moment of momentum动量矩守恒conservation of momentum动量守恒continuity连续性continuum连续介质continuum hypothesis连续介质假设control surface控制面control volume控制体( 积) convect
3、ive accelerationconvergent-divergent nozzle缩放喷嘴converging nozzle收缩喷嘴correction coefficient修正系数critical pressure临界压强critical Reynolds number临界雷诺数critical speed of sound临界声速critical state临界状态cross section横截面curvature radius曲率半径curved shock曲面波cylindrical coordinate system柱坐标系Ddeformationvelocity变形速度den
4、sity密度detachment脱体differential pressure差压, 压差, 压力降dimensionless number无量纲数displacement thickness位移厚度distribution分布disturbance wave扰动波doublet偶极子drag coefficient阻力系数dynamic pressure动压强dynamic similarity动力相似性dynamic viscosity动力粘度Eeddy zone涡流区eddying flow涡(紊旋)流efficiency效率elastic wave弹性波elevation head位置
5、水头energy of turbulence湍能enthalpy焓entropy熵equation of continuity连续性方程equation of energy能量方程equation of moment of momentum动量矩方程equation of motion运动方程equation of state状态方程equilibrium平衡Eulerian equation欧拉方程Euler method欧拉方法Eulers formula欧拉公式Ffield场flow coefficient流量系数flow meter流量表, 流量计flow net流网flow patt
6、ern流型fluctuating pressure脉动压力fluctuatingstress脉动应力fluid流体fluid dynamics流体动力学fluid field流场fluid machinery流体机械fluid mechanics流体力学fluid particle流体质点fluid statics流体静力学free surface自由表面friction coefficient摩擦系数friction drag摩擦阻力frictionless fluid无粘性流体Ggasconstant气体常数gasdynamics气体动力学gaugepressure表压力geometric
7、pressure几何压力geometricsimilarity几何相似gradual contraction渐缩gradual enlargement渐扩Hharmonicfunction调和函数headloss压头损失heat transfer传热Helmholtz equation亥姆霍兹方程heterogeneous fluid非均质流体homogeneous fluid均质流体horizontal force水平力horizontal line水平线hydraulic diameter水力直径hydraulically smooth zero of turbulent pipe flo
8、w紊流光滑管区hydrostaticshydrostatics force流体静压力hydrostatics stress流体静应力hypersonic flow高超音速流动 (m5)Iincompressible fluid不可压缩流体inertial coordinate system惯性坐标系initial condition初始条件input输入intensity of turbulence紊流( 强) 度interface分界面internal energy内能internalfriction内摩擦inviscidfluidirrotationalflow无旋流动irrotation
9、almotion无旋运动isentropicprocess定熵过程isotropic flow均质流动isotropicfluidKKarman qotex street卡门涡街kinematic energy动能kinematic moleculer theory分子运动论kinematic similarity运动相似性kinematicviscosity运动粘度Kutta-Joukowski theorem库塔儒可夫斯基定理LLagrange method拉格朗日方法Lagrangian viewpoint拉格朗日观点laminar boundary layer层流边界层laminar
10、flow层流laminar sublayer层流底层Laplace operator拉普拉斯算子Laplaces equation拉普拉斯方程Laval nozzle拉伐尔喷管lift升力linear acceleration线性加速度linear velocity线速度liquid液体liquid fluidlocal acceleration当地加速度MMach angle马赫角Mach cone马赫锥Mach number马赫数mass质量mass flowrate质量流量material derivative随体导数mean-time-average velocity时均速度mecha
11、nical energy机械能mercury水银minor loss局部阻力mixing-lengththeory混合长理论moment of momentum动量矩momentum integral relation动量积分关系式momentum thickness动量厚度moody diagram莫迪图move velocity平移速度multi-phase flow多相流流动NNavier-stokes equation纳维斯托克斯( N-S) 方程near wall region近壁区Neutons viscosity law牛顿粘性定律Newtonian fluid牛顿流体no so
12、urces and sinks无源无汇node节点non-steady flow非定常流动non-uniform非均匀流动nonviscous fluid非粘性流体normal direction法向normal line法线normal shock wave正激波normal stress法向应力Ooblique shock斜激波one-dimensional compressible flow一维可压缩流动one-dimensional flow一维流动one order tensor一阶张量open channel flow明渠流动open system开口系统order of magn
13、itude量级orifice孔口orifice plate孔板output输出Pparallel flow层流流动parameter参数particle path质点轨迹path line迹线perfect gas理想气体pipe flow管流Pitot-static tube皮托静压管Pitot tube皮托管plane flow平面流动plane jet平面射流point of inflextion拐点point of transition过渡点potentional energy势能Potential flow势流power功率Prandtl mixing length普朗特混合长度Pr
14、andtl number普朗特数pressure differential压差pressure drag压差阻力pressure field压强场pressure force压力pressure gage压强计pressure gradient压强梯度pressure head压强水头pressure wave压力波Qquantum mechanics量子力学quasi-static process准静态过程quasi-steady theory准定常理论Rradial velocity经向速度ratio of specific heats比热比real fluid粘性流体real gas真实
15、气体, 实际气体rectangular coordinate system直角坐标系reduced Navier-Stokes equation简化纳维斯托克斯方程Reynolds number雷诺数resonance共振Reynolds stress雷诺应力rotation velocity旋转速度rotational flow有旋流动rough-pipe zone of flow流动的光滑管区roughness粗糙度Ssame mass flow均质流secondary flow二次流流动separation point分离点sharp-crested weir尖顶堰shear stres
16、s剪切力shear deformation剪切变形shock wave激波similarity相似性sink汇siphon虹吸管skin(or wall) friction表面( 或壁) 摩擦( 力) small perturbance小扰动sonic barrier声障sonic flow声速流动sound wavesource源specific force of gravity比重specific heat比热speed of sound声速spherical coordinate system球坐标系Stokes viscosity law斯托克斯粘性定律stress tenser应力张
17、量stress应力stagnation point驻点stagnation pressure驻点压强stagnation temperature驻点温度standard atmosphere标准大气压static pressure静压强steady flow定常流动strain rate tensor变形速度张量streamline流线stream function流函数streamline form流线形streamtube流管Strouhal number斯特劳哈尔数subcritical flow亚临界流动subsonic flow亚声速流动supercritical flow超临界流动
18、supersonic flow超声速流动surface force表面力surface tension表面张力Ttemperature gradient温度梯度tensor张量theory of similarity相似性理论thermalconductivity热传导率thermal field温度场thin-plate orifice flowmeter薄孔板流量计total drag总阻力total flow总流量total pressure总压强traction force拉力transformation转换transonic flow跨音速流动transporttheorem输运定理
19、triangular weir三角堰turbo-machinery涡轮机械turbulent boundary layer湍流(紊流)边界层turbulent energy湍流(紊流)能量turbulent flow紊流turbulent jet湍流(紊流)射流two-dimensional flow二维流动UU - tubeU型管uniform flow均匀流动unit vector单位矢量unsteady flowVvelocity速度velocity circulation速度环量velocity gradient速度梯度velocity head速度水头velocity of soun
20、d音速velocity potential速度势Venturi flowmeter文丘里流量计vertical force垂直力viscous sublayerviscosity粘度viscosity factor粘度系数viscosity resistance粘性阻力viscous fluidvolume of flow流量volume flow容积流量von Karman integral momentum equation卡门动量积分方程vortex涡旋vortex flow涡流vortex line涡线vortex street涡街vortex strength涡强度vortex tube涡管vorticity涡量Wwake vortex尾涡流wave drag波阻wave length波长wave speed波速well-ordered mean-time-average flow有序时均流wind tunnel风洞woke尾涡区work功
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