Abstract
This paper describes a new time marching calculation of blade surface cavitation based on a linearized free streamline theory using a singularity method. In this calculation, closed cavity models for partial and super cavities are combined to simulate the transitional cavity oscillation between partial and super cavities. The results for an isolated hydrofoil located in a 2-D channel are presented. Although the re-entrant jet is not taken into account, the transitional cavity oscillation with large amplitude, which is known to occur when the cavity length exceeds 75 percent of the chord length, was simulated fairly well. The partial cavity oscillation with relatively high frequency was simulated as damping oscillations. The frequency of the damping oscillation agrees with that of a stability analysis and of experiments. The present calculation can be easily extended to simulate other cavity instabilities in pumps or cascades.
| Original language | English |
|---|---|
| Pages (from-to) | 692-697 |
| Number of pages | 6 |
| Journal | Journal of Fluids Engineering, Transactions of the ASME |
| Volume | 123 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Sep 2001 |
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All Science Journal Classification (ASJC) codes
- Mechanical Engineering
Cite this
Theoretical analysis of transitional and partial cavity instabilities. / Watanabe, Satoshi; Tsujimoto, Yoshinobu; Furukawa, Akinori.
In: Journal of Fluids Engineering, Transactions of the ASME, Vol. 123, No. 3, 09.2001, p. 692-697.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Theoretical analysis of transitional and partial cavity instabilities
AU - Watanabe, Satoshi
AU - Tsujimoto, Yoshinobu
AU - Furukawa, Akinori
PY - 2001/9
Y1 - 2001/9
N2 - This paper describes a new time marching calculation of blade surface cavitation based on a linearized free streamline theory using a singularity method. In this calculation, closed cavity models for partial and super cavities are combined to simulate the transitional cavity oscillation between partial and super cavities. The results for an isolated hydrofoil located in a 2-D channel are presented. Although the re-entrant jet is not taken into account, the transitional cavity oscillation with large amplitude, which is known to occur when the cavity length exceeds 75 percent of the chord length, was simulated fairly well. The partial cavity oscillation with relatively high frequency was simulated as damping oscillations. The frequency of the damping oscillation agrees with that of a stability analysis and of experiments. The present calculation can be easily extended to simulate other cavity instabilities in pumps or cascades.
AB - This paper describes a new time marching calculation of blade surface cavitation based on a linearized free streamline theory using a singularity method. In this calculation, closed cavity models for partial and super cavities are combined to simulate the transitional cavity oscillation between partial and super cavities. The results for an isolated hydrofoil located in a 2-D channel are presented. Although the re-entrant jet is not taken into account, the transitional cavity oscillation with large amplitude, which is known to occur when the cavity length exceeds 75 percent of the chord length, was simulated fairly well. The partial cavity oscillation with relatively high frequency was simulated as damping oscillations. The frequency of the damping oscillation agrees with that of a stability analysis and of experiments. The present calculation can be easily extended to simulate other cavity instabilities in pumps or cascades.
UR - http://www.scopus.com/inward/record.url?scp=8744221161&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=8744221161&partnerID=8YFLogxK
U2 - 10.1115/1.1378295
DO - 10.1115/1.1378295
M3 - Article
AN - SCOPUS:8744221161
VL - 123
SP - 692
EP - 697
JO - Journal of Fluids Engineering, Transactions of the ASME
JF - Journal of Fluids Engineering, Transactions of the ASME
SN - 0098-2202
IS - 3
ER -