To derive the Navier-Stokes equations in spherical coordinates, we start with the general form of the Navier-Stokes equations in Cartesian coordinates and apply the transformation rules for spherical coordinates ((r, \theta, \phi)). This involves expressing the velocity field, pressure, and viscous terms in terms of the spherical coordinate components. The continuity equation is also transformed accordingly to account for the divergence in spherical coordinates. Finally, we reorganize the resulting equations to isolate terms and ensure they reflect the physical properties of fluid motion in a spherical geometry.
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The Navier-Stokes equations describe the motion of fluid substances and can be derived in cylindrical coordinates by starting from the fundamental principles of conservation of momentum, mass, and energy. In cylindrical coordinates (r, θ, z), the equations account for the radial, angular, and axial components of velocity. The derivation involves applying the continuity equation for mass conservation and the momentum equations, incorporating the effects of pressure, viscous forces, and body forces while using the appropriate transformation of the Laplacian and divergence operators to fit the cylindrical coordinate system. The resulting equations capture the dynamics of fluid flow in cylindrical geometries.
George Gabriel Stokes significantly contributed to the Navier-Stokes equations through his work on fluid dynamics, particularly in the formulation of the equations that describe the motion of viscous fluid substances. He introduced the concept of viscosity and derived equations that model the flow of incompressible fluids. His work laid the foundational principles necessary for the development of the Navier-Stokes equations, which are essential for understanding fluid flow in various applications, from aerodynamics to oceanography. Stokes' contributions ultimately helped formalize the mathematical framework that governs the behavior of fluid motion.
Y.-N Kim has written: 'Calculation of helicopter rotor blade/vortex interaction by Navier-Stokes procedures' -- subject(s): Rotors (Helicopters), Navier-Stokes equations
The answer depends on the nature of the equation. Mathematicians are still not able to solve the Navier-Stokes equations, for example. In fact there is a million dollar (US) prize if you can figure out a general solution. The equations are not simply mathematical contrivances to create a challenge: they deal with fluid flow and are used for studying the flow of liquids inside a pipe, or air-flow over a plane's wings and so on.
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Dochan Kwak has written: 'Computation of viscous incompressible flows' -- subject(s): Computational fluid dynamics, Space shuttle main engine, Three dimensional flow, Incompressible flow, Finite difference theory, Navier-Stokes equation 'An incompressible Navier-Stokes flow solver in three-dimensional curvilinear coordinate system using primitive variables' -- subject(s): Spherical coordinates, Navier-Stokes equation
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The Navier-Strokes equation is a term in physics used to describe the motion of a fluid substance. The equation applies Newton's second law to fluid motion.
A. Arnone has written: 'A Navier-Stokes solver for cascade flows' -- subject(s): Cascade flow, Navier-Stokes equation
In fluid dynamics, the energy equation and the Navier-Stokes equations are related because the energy equation describes how energy is transferred within a fluid, while the Navier-Stokes equations govern the motion of the fluid. The energy equation accounts for the effects of viscosity and heat transfer on the fluid flow, which are also considered in the Navier-Stokes equations. Both equations are essential for understanding and predicting the behavior of fluids in various situations.
The Poiseuille equation is derived from the Navier-Stokes equation for incompressible fluid flow in a cylindrical pipe, assuming laminar flow and steady state conditions. By applying assumptions of no-slip boundary conditions and conservation of mass and momentum, the equation simplifies to describe the flow rate in terms of viscosity, pressure gradient, and geometry of the pipe.
Moshe Israeli has written: 'Marching iterative methods for the parabolized and thin layer Navier-Stokes equations' -- subject(s): Iterative solution, Navier-Stokes equation
Yuichi Matsuo has written: 'Navier-Stokes simulations around a propfan using higher-order upwind schemes' -- subject(s): Prop-fans, Navier-Stokes equation
Nondimensionalization of equations are generally done to obtain the characteristic property of the system. Non Dimensionalization of incompressible navier stokes gives an equation in terms of Reynolds number hence simplifying the problem. Cheers Prasanth P
Peter M. Hartwich has written: 'High resolution upwind schemes for the three-dimensional, incompressible Navier-Stokes equations' -- subject(s): Navier-Stokes equation, Upwind schemes
W. Kelly Londenberg has written: 'Transonic Navier-Stokes calculations about a 65 degree Delta wing' -- subject(s): Delta wings, Turbulence models, Navier-Stokes equation, Transonic flow, Vortices