dorsal/arxiv
View SchemaNon-local modulation of the energy cascade in broad-band forced turbulence
| Authors | A. K. Kuczaj, B. J. Geurts, W. D. McComb |
|---|---|
| Categories | |
| ArXiv ID | physics/0604129 |
| URL | https://arxiv.org/abs/physics/0604129 |
| DOI | 10.1103/PhysRevE.74.016306 |
Abstract
Classically, large-scale forced turbulence is characterized by a transfer of energy from large to small scales via nonlinear interactions. We have investigated the changes in this energy transfer process in broad-band forced turbulence where an additional perturbation of flow at smaller scales is introduced. The modulation of the energy dynamics via the introduction of forcing at smaller scales occurs not only in the forced region but also in a broad range of length-scales outside the forced bands due to non-local triad interactions. Broad-band forcing changes the energy distribution and energy transfer function in a characteristic manner leading to a significant modulation of the turbulence. We studied the changes in this transfer of energy when changing the strength and location of the small-scale forcing support. The energy content in the larger scales was observed to decrease, while the energy transport power for scales in between the large and small scale forcing regions was enhanced. This was investigated further in terms of the detailed transfer function between the triad contributions and observing the long-time statistics of the flow. The energy is transferred toward smaller scales not only by wavenumbers of similar size as in the case of large-scale forced turbulence, but by a much wider extent of scales that can be externally controlled.
{
"annotation_id": "31c0b206-a050-4309-9434-d258306d9984",
"date_created": "2026-03-02T18:01:06.743000Z",
"date_modified": "2026-03-02T18:01:06.743000Z",
"file_hash": "bc5bb8e6d8b9f0110927bffe3fce368b0d27fe10aa883eadd4d7b9de4662b1c6",
"private": false,
"record": {
"abstract": "Classically, large-scale forced turbulence is characterized by a transfer of\nenergy from large to small scales via nonlinear interactions. We have\ninvestigated the changes in this energy transfer process in broad-band forced\nturbulence where an additional perturbation of flow at smaller scales is\nintroduced. The modulation of the energy dynamics via the introduction of\nforcing at smaller scales occurs not only in the forced region but also in a\nbroad range of length-scales outside the forced bands due to non-local triad\ninteractions. Broad-band forcing changes the energy distribution and energy\ntransfer function in a characteristic manner leading to a significant\nmodulation of the turbulence. We studied the changes in this transfer of energy\nwhen changing the strength and location of the small-scale forcing support. The\nenergy content in the larger scales was observed to decrease, while the energy\ntransport power for scales in between the large and small scale forcing regions\nwas enhanced. This was investigated further in terms of the detailed transfer\nfunction between the triad contributions and observing the long-time statistics\nof the flow. The energy is transferred toward smaller scales not only by\nwavenumbers of similar size as in the case of large-scale forced turbulence,\nbut by a much wider extent of scales that can be externally controlled.",
"arxiv_id": "physics/0604129",
"authors": [
"A. K. Kuczaj",
"B. J. Geurts",
"W. D. McComb"
],
"categories": [
"physics.flu-dyn",
"physics.comp-ph"
],
"doi": "10.1103/PhysRevE.74.016306",
"title": "Non-local modulation of the energy cascade in broad-band forced turbulence",
"url": "https://arxiv.org/abs/physics/0604129"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "d4f9344a-041a-4b12-a9ab-260ee7e72c49",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}