![]() ![]() ![]() Generally, cavitation can be classied into two types: Inertial and Non-inertial. The comparison showed that Boes and Hager relationship results (2003) were the closest to the experimental results. Introduction When a homogeneous liquid is subjected to a transient pressure drop below its saturated vapor pressure at a given temperature, small vapor cavities, referred to as Cavitation 1, can be formed inside the liquid media. (2000), Chanson (2001) and Boes and Hager (2003) for the prediction of the location of air inception point in the limits of this study. The experimental results for flat steps were compared with the results of three relationships: Matos et al. The thermal effect on bubble growth during cavitation is introduced in the. Twelve empirical equations for air inception point distance on stepped spillways were suggested based on the experimental results. A thermodynamic cavitation model is developed to simulate the cavitating water flow in a wide temperature range. Under the wrong conditions cavitation reduces components life time dramatically. Sponsored Links Cavitation is a common problem in pumps and control valves - causing serious wear, tear and damage. The location of air inception point was closer to the crest in pooled steps compared with flat steps this location was farther than flat steps when the gaps between end sills and step rises were filled with gabions. Cavitation occurs in fluid flow systems where the local static pressures are below the fluids vapor pressure. For the same discharge, the location of air inception point was closer to the crest for larger step heights and lesser slope angle. The results of experimental work emphasize that for the same model air inception point location moved downstream as the discharge increased. ![]() Twelve stepped spillway models have been manufactured with three downstream slope angles: 25, 35 and 45°, and four numbers of steps: 5, 10, 15 and 20. ![]()
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