On the Lamb vector and the hydrodynamic charge
Experiments in fluids, 2007•Springer
This work is an attempt to test the concept of the hydrodynamic charge (analogous to the
electric charge in electromagnetism) in the simple case of a coherent structure such as the
Burgers vortex. We provide experimental measurements of both the so-called Lamb vector
and its divergence (the charge) by two-dimensional particles images velocimetry. In
addition, we perform a Helmholtz–Hodge decomposition of the Lamb vector in order to
explore its topological features. We compare the charge with the well-known Q-criterion in …
electric charge in electromagnetism) in the simple case of a coherent structure such as the
Burgers vortex. We provide experimental measurements of both the so-called Lamb vector
and its divergence (the charge) by two-dimensional particles images velocimetry. In
addition, we perform a Helmholtz–Hodge decomposition of the Lamb vector in order to
explore its topological features. We compare the charge with the well-known Q-criterion in …
Abstract
This work is an attempt to test the concept of the hydrodynamic charge (analogous to the electric charge in electromagnetism) in the simple case of a coherent structure such as the Burgers vortex. We provide experimental measurements of both the so-called Lamb vector and its divergence (the charge) by two-dimensional particles images velocimetry. In addition, we perform a Helmholtz–Hodge decomposition of the Lamb vector in order to explore its topological features. We compare the charge with the well-known Q-criterion in order to assess its interest in detecting and characterizing coherent structure. Usefulness of this concept in studies of vortex dynamics is demonstrated.
Springer
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