An investigation of ship airwakes using detached-eddy simulation. (English) Zbl 1242.76163
Summary: Computational Fluid Dynamics simulations of ship airwakes have been performed using Detached-Eddy Simulation (DES) on unstructured grids. A generic simple frigate shape (SFS2) and a Royal Navy Type 23 Frigate (T23) have been studied at several wind-over-deck (WOD) conditions. A comprehensive validation exercise has been performed, comparing CFD results of the airwake calculated for the SFS2 with high quality wind tunnel data provided by the National Research Council of Canada. Comparisons of mean quantities and velocity spectra show good agreement, indicating that DES is able to resolve the large-scale turbulent structures which can adversely impact helicopter-ship operations. An analysis of the airwake flow topology at headwind and Green \(45^\circ \) conditions highlights the dominant flow features over the flight deck and it is shown that significant differences exist between the two WOD angles. T23 airwake data has been compared to full-scale experimental results obtained at sea. It is shown that the inclusion of an atmospheric boundary layer velocity profile in the CFD computations improves the agreement with full-scale data. Qualitative comparison between the simple frigate shape and T23 airwakes shows that large-scale flow patterns are similar; but subtle differences exist, particularly at more oblique WOD angles.
MSC:
| 76M12 | Finite volume methods applied to problems in fluid mechanics |
| 76-05 | Experimental work for problems pertaining to fluid mechanics |
Keywords:
computational fluid dynamics; airwake; detached-eddy simulation; frigate; bluff-body flow; validationReferences:
| [1] | Carico D, Fang R, Finch RS, Geyer Jr WP, Krijns HW, Long K. Helicopter/ship qualification testing. Technical Report. RTO-AG-300-V22, RTO/NATO; 2003.; Carico D, Fang R, Finch RS, Geyer Jr WP, Krijns HW, Long K. Helicopter/ship qualification testing. Technical Report. RTO-AG-300-V22, RTO/NATO; 2003. |
| [2] | Advani SK, Wilkinson CH. Dynamic interface modelling and simulation – a unique challenge. In: Royal aeronautical society conference on helicopter flight simulation, London, UK; 2001.; Advani SK, Wilkinson CH. Dynamic interface modelling and simulation – a unique challenge. In: Royal aeronautical society conference on helicopter flight simulation, London, UK; 2001. |
| [3] | Zan, S. J., On aerodynamic modelling and simulation of the dynamic interface, Proc Inst Mech Eng, Part G: J Aerospace Eng, 219, 5, 393-410 (2005) |
| [4] | Bogstad, M. C.; Habashi, W. G.; Akel, I.; Ait-Ali-Yahia, D.; Giannias, N.; Longo, V., Computational-fluid-dynamics based advanced ship-airwake database for helicopter flight simulators, J Aircraft, 39, 5, 830-838 (2002) |
| [5] | Roper, D. M.; Owen, I.; Padfield, G. D.; Hodge, S. J., Integrating CFD and piloted simulation to quantify ship-helicopter operating limits, Aeronaut J, 110, 1109, 419-428 (2006) |
| [6] | Zan, S., Technical comment on ‘computational-fluid-dynamics based advanced ship-airwake database for helicopter flight simulation’, J Aircraft, 40, 5, 1007 (2003) |
| [7] | Roper DM, Owen I, Padfield GD. CFD investigation of the helicopter-ship dynamic interface. In: 61st AHS annual forum proceedings, vol. 2, Grapevine, TX; 2005. p. 1985-2002.; Roper DM, Owen I, Padfield GD. CFD investigation of the helicopter-ship dynamic interface. In: 61st AHS annual forum proceedings, vol. 2, Grapevine, TX; 2005. p. 1985-2002. |
| [8] | Polsky SA, Bruner CWS. Time-accurate computational simulations of an LHA ship airwake. In: 18th AIAA applied aerodynamics conference, Denver, CO; 2000.; Polsky SA, Bruner CWS. Time-accurate computational simulations of an LHA ship airwake. In: 18th AIAA applied aerodynamics conference, Denver, CO; 2000. |
| [9] | Polsky SA. A computational study of unsteady ship airwake. In: 40th AIAA aerospace sciences meeting, Reno, NV; 2002.; Polsky SA. A computational study of unsteady ship airwake. In: 40th AIAA aerospace sciences meeting, Reno, NV; 2002. |
| [10] | Bunnell JW. An integrated time-varying airwake in a UH-60 Black Hawk shipboard landing simulation. In: AIAA modeling and simulation technologies conference and exhibit, Montreal, Canada; 2001.; Bunnell JW. An integrated time-varying airwake in a UH-60 Black Hawk shipboard landing simulation. In: AIAA modeling and simulation technologies conference and exhibit, Montreal, Canada; 2001. |
| [11] | Roscoe MF, Thompson JH. JSHIP’s dynamic interface modeling and simulation system: a simulation of the UH-60A helicopter/LHA shipboard environment task. In: American helicopter society 59th annual forum, Phoenix, AZ; 2003.; Roscoe MF, Thompson JH. JSHIP’s dynamic interface modeling and simulation system: a simulation of the UH-60A helicopter/LHA shipboard environment task. In: American helicopter society 59th annual forum, Phoenix, AZ; 2003. |
| [12] | Lee, D.; Sezer-Uzol, N.; Horn, J. F.; Long, L. N., Simulation of helicopter shipboard launch and recovery with time-accurate airwakes, J Aircraft, 42, 2, 448-461 (2005) |
| [13] | Lee, D.; Horn, J. F., Simulation of pilot workload for a helicopter operating in a turbulent ship airwake, Proc Inst Mech Eng, Part G: J Aerospace Eng, 219, 5, 445-458 (2005) |
| [14] | Lee D, Horn JF, Sezer-Uzol N, Long LN. Simulation of pilot control activity during helicopter shipboard operation. In: AIAA atmospheric flight mechanics conference and exhibit, Austin, TX; 2003.; Lee D, Horn JF, Sezer-Uzol N, Long LN. Simulation of pilot control activity during helicopter shipboard operation. In: AIAA atmospheric flight mechanics conference and exhibit, Austin, TX; 2003. |
| [15] | McKillip RM, Boschitsch A, Quackenbush T, Keller J, Wachspress D. Dynamic interface simulation using a coupled vortex-based ship airwake and rotor wake model. In: American helicopter society 58th annual forum, Montreal, Canada; 2002.; McKillip RM, Boschitsch A, Quackenbush T, Keller J, Wachspress D. Dynamic interface simulation using a coupled vortex-based ship airwake and rotor wake model. In: American helicopter society 58th annual forum, Montreal, Canada; 2002. |
| [16] | Guillot, M. J., Computational simulation of the air wake over a naval transport vessel, AIAA J, 40, 10, 2130-2133 (2002) |
| [17] | Tai, T. C.; Carico, D., Simulation of DD-963 ship airwake by Navier-Stokes method, J Aircraft, 32, 6, 1399-1401 (1995) |
| [18] | Wilkinson C, Zan S, Gilbert N, Funk J. Modelling and simulation of ship air wakes for helicopter operations – a collaborative venture. In: AGARD symposium on fluid dynamics, problems of vehicles operating near or in the air-sea interface, Amsterdam, Netherlands; 1998.; Wilkinson C, Zan S, Gilbert N, Funk J. Modelling and simulation of ship air wakes for helicopter operations – a collaborative venture. In: AGARD symposium on fluid dynamics, problems of vehicles operating near or in the air-sea interface, Amsterdam, Netherlands; 1998. |
| [19] | Cheney BT, Zan SJ. CFD code validation data and flow topology for the technical co-operation program AER-TP2 simple frigate shape. Technical Report. LTR-A-035, NRC-CNRC; April 1999.; Cheney BT, Zan SJ. CFD code validation data and flow topology for the technical co-operation program AER-TP2 simple frigate shape. Technical Report. LTR-A-035, NRC-CNRC; April 1999. |
| [20] | Zan, S. J., Surface flow topology for a simple frigate shape, Can Aeronaut Space J, 47, 1, 33-43 (2001) |
| [21] | Reddy, K. R.; Toffoletto, R.; Jones, K. R.W., Numerical simulation of ship airwake, Comput Fluids, 29, 4, 451-465 (2000) · Zbl 1047.76518 |
| [22] | Liu J, Long LN. Higher order accurate ship airwake predictions for the helicopter/ship interface problem. In: Annual forum proceedings - American helicopter society, vol. 1 of proceedings of the 54th annual forum – part 2 (of 2), Washington, DC; 1998. p. 58-70.; Liu J, Long LN. Higher order accurate ship airwake predictions for the helicopter/ship interface problem. In: Annual forum proceedings - American helicopter society, vol. 1 of proceedings of the 54th annual forum – part 2 (of 2), Washington, DC; 1998. p. 58-70. |
| [23] | Wakefield, N. H.; Newman, S. J.; Wilson, P. A., Helicopter flight around a ship’s superstructure, Proc Inst Mech Eng, Part G: J Aerospace Eng, 216, 1, 13-28 (2002) |
| [24] | Yesilel, H.; Edis, F. O., Ship airwake analysis by CFD methods, Am Inst Phys Conf Proc, 936, 674-677 (2007) · Zbl 1152.65400 |
| [25] | Syms, G. F., Simulation of simplified-frigate airwakes using a Lattice-Boltzmann method, J Wind Eng Ind Aerodynam, 96, 6-7, 1197-1206 (2008) |
| [26] | Spalart, P. R.; Jou, W. H.; Strelets, M.; Allmaras, S. R., Comments on the feasibility of LES for wings, and on a hybrid RANS/LES approach, (Advances in DNS/LES (1997), Greyden Press), 137-147 |
| [27] | Strelets M. Detached eddy simulation of massively separated flows. In: 39th AIAA aerospace sciences meeting and exhibit, Reno, NV; 2001.; Strelets M. Detached eddy simulation of massively separated flows. In: 39th AIAA aerospace sciences meeting and exhibit, Reno, NV; 2001. |
| [28] | Spalart, P. R.; Squires, K. D., The status of detached-eddy simulation for bluff bodies, (Direct and large eddy simulation V (2004), Springer) |
| [29] | Padfield, G. D.; White, M. D., Flight simulation in academia: HELIFLIGHT in its first year of operation at the University of Liverpool, Aeronaut J, 107, 1075, 529-538 (2003) |
| [30] | Forrest JS, Hodge SJ, Owen I, Padfield GD. Towards fully simulated ship-helicopter operating limits: the importance of ship airwake fidelity. In: American helicopter society 64th annual forum, vol. 1. Montreal, Canada; 2008. p. 339-51.; Forrest JS, Hodge SJ, Owen I, Padfield GD. Towards fully simulated ship-helicopter operating limits: the importance of ship airwake fidelity. In: American helicopter society 64th annual forum, vol. 1. Montreal, Canada; 2008. p. 339-51. |
| [31] | Forrest JS, Hodge SJ, Owen I, Padfield GD. An investigation of ship airwake phenomena using time-accurate CFD and piloted helicopter flight simulation. In: 34th European rotorcraft forum, Liverpool, UK; 2008.; Forrest JS, Hodge SJ, Owen I, Padfield GD. An investigation of ship airwake phenomena using time-accurate CFD and piloted helicopter flight simulation. In: 34th European rotorcraft forum, Liverpool, UK; 2008. |
| [32] | Fluent, Ver. 6.3.26. Lebanon, NH: Fluent Inc.; 2006.; Fluent, Ver. 6.3.26. Lebanon, NH: Fluent Inc.; 2006. |
| [33] | Menter, F.; Kuntz, M.; Langtry, R., Ten years of industrial experience with the SST turbulence model, (Hanjalic, K.; Nagano, Y.; Tummers, M., Turbulence, Heat and Mass Transfer, vol. 4 (2003), Begell House: Begell House Redding (CT)), 625-632 |
| [34] | VanLeer, B., Toward the ultimate conservative difference scheme. IV. A second order sequel to Godunov’s method, J Computat Phys, 32, 101-136 (1979) · Zbl 1364.65223 |
| [35] | Spalart PR. Young-person’s guide to detached-eddy simulation grids. Technical Report. NASA/CR-2001-211032, NASA; 2001.; Spalart PR. Young-person’s guide to detached-eddy simulation grids. Technical Report. NASA/CR-2001-211032, NASA; 2001. |
| [36] | Hedges, L. S.; Travin, A. K.; Spalart, P. R., Detached-eddy simulations over a simplified landing gear, J Fluids Eng, Trans ASME, 124, 2, 413-423 (2002) |
| [37] | Forsythe, J. R.; Squires, K. D.; Wurtzler, K. E.; Spalart, P. R., Detached-eddy simulation of the F-15E at high alpha, J Aircraft, 41, 2, 193-200 (2004) |
| [38] | Morton SA, Forsythe JR, Squires KD, Wurtzler KE. Assessment of unstructured grids for detached eddy simulation of high Reynolds number separated flows. In: Proceedings of the 8th international conference on numerical grid generation for computational field simulations, Honolulu, HI; 2002. p. 571-86.; Morton SA, Forsythe JR, Squires KD, Wurtzler KE. Assessment of unstructured grids for detached eddy simulation of high Reynolds number separated flows. In: Proceedings of the 8th international conference on numerical grid generation for computational field simulations, Honolulu, HI; 2002. p. 571-86. |
| [39] | Cheng, G. C.; Farokhi, S., On turbulent flows dominated by curvature effects, J Fluids Eng, Trans ASME, 114, 1, 52-57 (1992) |
| [40] | Okajima, A., Strouhal numbers of rectangular cylinders, J Fluid Mech, 123, 379-398 (1982) |
| [41] | Norberg, C., Flow around rectangular cylinders: pressure forces and wake frequencies, J Wind Eng Ind Aerodynam, 49, 187-196 (1993) |
| [42] | Yu, D.-H.; Kareem, A., Numerical simulation of flow around rectangular prism, J Wind Eng Ind Aerodynam, 67 and 68, 195-208 (1997) |
| [43] | Jeong, J.; Hussain, F., On the identification of a vortex, J Fluid Mech, 285, 69-94 (1995) · Zbl 0847.76007 |
| [44] | Hicks, B. B., Propeller anemometers as sensors of atmospheric turbulence, Bound-Lay Meteorol, 3, 214-228 (1972) |
| [45] | Counihan, J., Adiabatic atmospheric boundary layers: a review and analysis of data from the period 1880-1972, Atmos Environ, 9, 10, 871-905 (1975) |
| [46] | Polsky SA. CFD prediction of airwake flowfields for ships experiencing beam winds. In: 21st AIAA applied aerodynamics conference, Orlando, FL; 2003.; Polsky SA. CFD prediction of airwake flowfields for ships experiencing beam winds. In: 21st AIAA applied aerodynamics conference, Orlando, FL; 2003. |
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