Questions tagged [fluid-dynamics]

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What exactly was Lagrange's "grave mistake" with respect to rotating bodies under hydrostatic equilibrium?

A comment below What would be different about satellite orbits if Earth were prolate? Would we have Sun-synchronous and Molniya orbits? got me reading Wikipedia's Jacobi ellipsoid which begins: ...
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177 views

Who was the first person to describe turbulence in mathematical terms?

Here I found that: Sixty years later, Russian mathematician Andrey Kolmogorov furthered our mathematical understanding of turbulence when he proposed that energy in a turbulent fluid at length $R$ ...
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171 views

Reference request: modern assesement of J.H. Lambert's work on the "fluidity of sand"

While reading about different aspects of Johann Heinrich Lambert's life and work, I found many interesting side remarks about Lambert's work by different authors, though it is very hard to find modern ...
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304 views

Who introduced gravitational potential?

Some sources say that gravitational potential was introduced by Lagrange in 1773, and others say that it was introduced by Bernoulli in 1738. I sifted through Daniel Bernoulli's Hydrodynamica (...
• 699
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Was Rayleigh the first to derive the drag equation?

I was reading about The Drag Equation: $$F_D = \frac{1}{2} \rho v^2 C_D A$$ where: $F_D$ is the drag force $\rho$ is the mass density of the fluid $v$ is the flow velocity relative to the ...
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What were Gauss's contributions to capillarity?

I am writing a Wikipedia article (in a certain language) in which I intend to include a summary of Carl Friedrich Gauss's contributions to capillarity. I know that Gauss derived the Young-Laplace ...
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99 views

Who introduced the stream function?

I have found many different claimed answers to this question: Wikipedia article on the stream function claims that Lagrange introduced it in 1781. Darrigol's The Worlds of Flow says that D'Alambert ...
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121 views

What motivated scientists to define quantities at a point?

We know that quantities can be defined at a point. Let's take density for instance. If we take a volume in some quantity of matter and keep on shrinking it to a point where we can assign a uniform ...
115 views

Who introduced velocity potential?

Wikipedia cites John Anderson’s A History of Aerodynamics and says that velocity potential was introduced by Lagrange in 1788. However, I could trace it at least to Euler 1752, where he published his ...
• 699
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