On the acoustic force field [VI.]

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

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...

متن کامل

Acoustic Force Density Acting on Inhomogeneous Fluids in Acoustic Fields.

We present a theory for the acoustic force density acting on inhomogeneous fluids in acoustic fields on time scales that are slow compared to the acoustic oscillation period. The acoustic force density depends on gradients in the density and compressibility of the fluid. For microfluidic systems, the theory predicts a relocation of the inhomogeneities into stable field-dependent configurations,...

متن کامل

Acoustofluidics 7: The acoustic radiation force on small particles.

In this paper, Part 7 of the thematic tutorial series "Acoustofluidics-exploiting ultrasonic standing waves, forces and acoustic streaming in microfluidic systems for cell and particle manipulation", we present the theory of the acoustic radiation force; a second-order, time-averaged effect responsible for the acoustophoretic motion of suspended, micrometre-sized particles in an ultrasound field.

متن کامل

Field Effectiveness of Vi Polysaccharide

To the Editor—Field investigations in the People’s Republic of China to determine the protective efficacy of typhoid Vi polysaccharide vaccine (Vi vaccine) were done among students attending a middle school [1]. Vi vaccine was offered to students even during an outbreak of typhoid fever. The efficacy was 73% among those immunized before the outbreak and 71% among vaccine recipients during the o...

متن کامل

2 Atomic Force Acoustic Microscopy

Abbreviations a 1 , a 2 , a 3 , a 4 and A 1 , A 2 , A 3 , A 4 Constants in the shape function y(x) a C Contact radius α Wave number of the flexural waves A Cross-section area of the cantilever b Thickness of the cantilever c P Ratio φ Lat /φ d Y 0 , d X0 Normalized amplitude of the sensor tip in y-and x-direction, respectively δ n , δ L Normal, lateral contact deflection (in the coordinate syst...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Časopis pro pěstování matematiky a fysiky

سال: 1912

ISSN: 1802-114X

DOI: 10.21136/cpmf.1912.122208