<紀要論文>
周期変動流中の微粒子運動解析におけるバセット項の影響

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概要 The motion of small particle in sinusoidal oscillating air flows is investigated numerically by Tchen equation with Crank-Nicholson method. The velocities of water particles whose diameter are 1, 10 a...nd 100μm are calculated in oscillating air flows in the frequency range from 1Hz to 1MHz. The result of analysis indicates that the amplitudes of particle velocity which are deduced including Basset term differ from those without Basset term, and the maximum error in the amplitude of particle velocity is 4% of the amplitude of fluid velocity at non-dimensional frequency fτ_p of 0.3. This error is reduced as the non-dimensional frequency fτ_p increased as well as decreased from 0.3, and the frequency range which the error is less than 2% is fτ_p≦0.08 or fτ_p≧2.0.続きを見る

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登録日 2009.04.22
更新日 2017.05.10