03 Application study of shallow water wave model (SWAN)

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α a: The variation of α almost hasn’t effect on the wave developing, when we experiment with wind speed below 7.5m/s(at 10m elevation). α b: However, the variation of has much effect on the wave developing when wind speed is between 7.5m/s and 15m/s, c: while it has little effect when wind speed is higher than 15m/s .
In view of the relation between Philips coefficient and friction velocity in equilibrium range of high frequency, based on the experiments of different wind field, we introduce a parabolic function concerning the friction velocity into the linear growth term of wind growth model in place of constant proportionality coefficient (in default, it is constant in SWAN model): α = ⎧0.0015 ⎪ ⎨− 6.1834× U ⎪ ⎩0.0015 2 * + 5.8989× U * −1.2568 U U 10 ≤ 7.5 m / s 7.5 m / s ≤ U 10 10 ≥15 m / s ≤15 m / s U 10 is wind speed at 10m elevation, is friction velocity. 2 U∗ = CD × U 2 10 , C D is drag coefficient. U *
Page 1 and 2: Yang dezhou Yin boshu Institute of
Page 3 and 4: Based on experiments and analysis,
Page 5 and 6: (2)Our experiments in different sea
Page 7 and 8: Linear growth by wind A = α [ U 2
Page 9 and 10: (2) Two expressions of white-cappin
Page 11 and 12: : An alternative formulation for wh
Page 13: 4. Improvement of proportionality c
Page 17 and 18: 5. Numerical implementation and res
Page 19 and 20: Computational domain All our exper
Page 21 and 22: Wind processes we select four typi
Page 23 and 24: 7 Measurements Default Komen -Alkyo
Page 25 and 26: It is easy to find out that the HS
Page 27 and 28: c: In addition, Cumulative Steepnes
Page 29 and 30: c: In addition, the amended SWAN mo
Page 31: [5] Hasselmann, K., 1974: On the sp

03 Application study of shallow water wave model (SWAN)

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