10.9.2.3 Helideck Environment Report Contents
The helideck environment report should contain the following information as a minimum:
Wind Tunnel Report
.
Details of model design and construction including reasoning for the choice of model scale and associated scaling parameters for replicating full-scale flow conditions
.
Details of wind tunnel set-up, instrumentation, instrument calibration, model set-up and data acquisition system
.
Details of the atmospheric boundary layer simulation and comparison of mean velocity and turbulence intensity profiles above sea level with standard target marine profiles (e.g. ESDU, NMD [Ref: 65]). Measurements should be obtained at the model position without the model installed
.
Details of scaling techniques used and experimental conditioning applied to achieve similarity with full-scale, e.g. enhanced model roughness to achieve Reynolds Number similarity
.
Tabular and graphical presentation of measured data in accordance with the recommendations in Section 10.10
.
Conclusions and recommendations to mitigate any adverse conditions that may impact on helicopter operations
.
Details of quality checks undertaken to ensure the accuracy of measured data and appropriate reference to guidelines on model scale experiments
.
A statement on the estimated error and uncertainty in the experimental data.
Computational Fluid Dynamics Report
.
Details of the CFD model with reasoning for the choice of computational domain, geometrical simplifications, computational mesh, modelling assumptions, sub-models (e.g. turbulence model, bulk resistance terms) and range of validity of the sub-models employed
.
Details of boundary conditions including the atmospheric boundary layer at the inlet, heat sources and surface roughness parameters (e.g. sea and platform surfaces)
.
Comparison of the atmospheric boundary layer profiles of mean velocity and turbulence intensity above sea level with standard target marine profiles (e.g. ESDU, NMD [Ref: 65]). Data should be extracted from the undisturbed free stream at a location approximately the same distance from the upwind boundary as the model of the facility
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Demonstration of adequate mesh independence through grid resolution sensitivity tests
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Demonstration of adequate convergence of the final steady-state solution or iterative transient solution at each time step
.
Tabular and graphical presentation of the simulations in accordance with the recommendations of the helideck design guide (see Section 10.10)
.
Conclusions and recommendations to mitigate any adverse conditions that may impact on helicopter operations
.
Details of quality checks undertaken to ensure the validity of the computational results including comparisons with available experimental data or empirical methods and appropriate references to best practice guidelines
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