محمودی, مصطفی
[ 1 ] - روش بررسی امکان وقوع تراک در جریانهای با سرعت بالا
In this paper, an evaluation method is presented for assessment of detonation occurrence hazard on the basis of some experimental data. This method is applied on a supersonic jet at the exit of a propulsion system including hydrogen. Because of mixing hydrogen with the surrounding air, a combustible mixture is occurred which detonation occurrence hazard is assessed in this mixture. Types of det...
[ 2 ] - Experimental investigation on sound of a centrifugal blower and fluctuating pressure on its volute
The Research has shown that the primary sound source in centrifugal turbomachines is the blade passing frequency noise, which is caused by due to impac rotor exit flow with the volute and the wild pressure fluctuations. In this paper, a centrifugal blower with forward facing blades has been selected and the sound created by it in the output channel has been investigated in different operating c...
[ 3 ] - Numerical study on the acoustic field of a centrifugal fan and the tonal noise sources
The widespread use of squirrel cage fans, especially in ventilation and home and industrial environments, has led to the formation of many research efforts to improve performance and reduce the sound produced by this type of fan. In the literature, the most important factor in generating sound in this category of fans is the confrontation between the rotor exit flow and the volute of the fan. I...
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