An absorbing dynamometer acts as a load that is driven by the prime mover that is under test (e.g. Pelton wheel). The dynamometer must be able to operate at any speed and load to any level of torque that the test requires.
While some causes are obvious, such as hurricanes and snow melt, many are not. Heavy Rains: Cresting rivers, backed-up storm drains, or saturated ground can cause significant floods. Heavy rains can contribute to flash floods, which are the number one weather-related killer in the United States. A flash flood is a rapid flooding of low-lying areas in less than six hours. Heavy rains also increase the chance of mudflows, rivers of liquid, and flowing mud.
Fluvial (River) Flooding Fluvial flooding occurs when rivers burst their banks as a result of sustained or intense rainfall. The image below shows fluvial flood risk for Dublin, created using our Flowrouteâ¢ flood modelling software. Fluvial Flooding Impact: Cornwall. Flowrouteâ¢ is used to predict the depth, duration, velocity and extent of flooding and is highly accurate. The images below compare fluvial flood risk modelled for Lostwithiel in Cornwall against aerial photography of an actual flooding event at that location in 2010. Coastal Flooding. Coastal flooding is caused by extreme tidal conditions including high tides, storm surges and tsunamis.