Although the cardinal attribute of turbulence is the velocity fluctuations, these fluctuations have been ignored in theories of the frictional drag of turbulent flows. Our goal is to test a new theory that links the frictional drag to the spectral exponent α, a property of the velocity fluctuations in a flow. We use a soap-film channel wherein for the first time the value of α can be switched between 3 and 5/3, the two theoretically possible values in soap-film flows. To induce turbulence with α=5/3, we make one of the edges of the soap-film channel serrated. Remarkably, the new theory of the frictional drag holds in both soap-film flows (for either value of the spectral exponent α) and ordinary pipe flows (where α=5/3), even though these t...
In this short review, I focus on recent experiments that benefit from the advantages offered by the ...
The friction f is the property of wall-bounded flows that sets the pumping cost of a pipeline, the d...
The friction f is the property of wall-bounded flows that sets the pumping cost of a pipeline, the d...
Although the cardinal attribute of turbulence is the velocity fluctuations, these fluctuations have ...
International audienceAlthough the cardinal attribute of turbulence is the velocity fluctuations, th...
There is a missing link between the macroscopic properties of turbulent flows(1-4), such as the fric...
There is a missing link between the macroscopic properties of turbulent flows(1-4), such as the fric...
There is a missing link between the macroscopic properties of turbulent flows(1-4), such as the fric...
There is a missing link between the macroscopic properties of turbulent flows(1-4), such as the fric...
There is a missing link between the macroscopic properties of turbulent flows1–4, such as the fricti...
We carry out unprecedented experimental measurements of the frictional drag in turbulent soap-film f...
We carry out unprecedented experimental measurements of the frictional drag in turbulent soap-f...
We carry out unprecedented experimental measurements of the frictional drag in turbulent soap-f...
In this short review, I focus on recent experiments that benefit from the advantages offered by the ...
In this short review, I focus on recent experiments that benefit from the advantages offered by the ...
In this short review, I focus on recent experiments that benefit from the advantages offered by the ...
The friction f is the property of wall-bounded flows that sets the pumping cost of a pipeline, the d...
The friction f is the property of wall-bounded flows that sets the pumping cost of a pipeline, the d...
Although the cardinal attribute of turbulence is the velocity fluctuations, these fluctuations have ...
International audienceAlthough the cardinal attribute of turbulence is the velocity fluctuations, th...
There is a missing link between the macroscopic properties of turbulent flows(1-4), such as the fric...
There is a missing link between the macroscopic properties of turbulent flows(1-4), such as the fric...
There is a missing link between the macroscopic properties of turbulent flows(1-4), such as the fric...
There is a missing link between the macroscopic properties of turbulent flows(1-4), such as the fric...
There is a missing link between the macroscopic properties of turbulent flows1–4, such as the fricti...
We carry out unprecedented experimental measurements of the frictional drag in turbulent soap-film f...
We carry out unprecedented experimental measurements of the frictional drag in turbulent soap-f...
We carry out unprecedented experimental measurements of the frictional drag in turbulent soap-f...
In this short review, I focus on recent experiments that benefit from the advantages offered by the ...
In this short review, I focus on recent experiments that benefit from the advantages offered by the ...
In this short review, I focus on recent experiments that benefit from the advantages offered by the ...
The friction f is the property of wall-bounded flows that sets the pumping cost of a pipeline, the d...
The friction f is the property of wall-bounded flows that sets the pumping cost of a pipeline, the d...