| Autor: |
KRZYSZTOF MURAWSKI, MICHAŁ TARNOWSKI |
| Jazyk: |
angličtina |
| Rok vydání: |
2004 |
| Předmět: |
|
| Zdroj: |
TASK Quarterly, Vol 8, Iss 1 (2004) |
| Druh dokumentu: |
article |
| ISSN: |
1428-6394 |
| Popis: |
We examine by analytical and numerical means sound waves which propagate in a spaceand time-dependent random mass density field in the form of dispersionless wave noise of its spectrum E(k,ω) ∼ E(k)δ(ω−crk), where cr is a random speed. Numerical simulations are in agreement with the analytical theory which shows that at cr = ω/k resonance occurs and the cyclic frequency ω tends to infinity. For values of cr which are close to the resonance point, the sound waves are slowed down and attenuated (accelerated and amplified) for cr < ω/k (cr > ω/k). |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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