Revision as of 10:11, 24 September 2015 view source Chris Huxley (talk \| contribs) Bureaucrats, Administrators 7,789 edits →2D Bridge Modelling in TUFLOW ← Older edit		Revision as of 10:11, 24 September 2015 view source Chris Huxley (talk \| contribs) Bureaucrats, Administrators 7,789 edits →2D Bridge Modelling in TUFLOW Newer edit →
Line 19: Form loss coefficients are an important input to the flow constriction layers. TUFLOW form loss coefficients can be derived from information in publications such as ''Hydraulics of Bridge Waterways'' ([http://www.ciccp.es/ImgWeb/Castilla%20y%20Leon/Documentaci%C3%B3n%20T%C3%A9cnica/Hydraulics%20of%20Bridge%20Waterways%20(1978).pdf FHA, 1978]). Backwater caused by piers in a bridge constriction is dependent on the ratio of the ~~piers~~pier area relative to the gross area of the bridge opening, the type of piers (or piling in the case of pile bents) and the angularity of the piers with the direction of flood flow. The FHA (1978) guidance advises what form loss coefficient should be adopted based on these input parameter. <ol> <li>Calculate the ratio of the water area occupied by piers to the gross water area of the constriction (both based on the normal water surface) and the angularity of the piers. These inputs are used to calculate "J" in the FHA documentation.</li>

TUFLOW 2D Hydraulic Structures: Difference between revisions