Coagulation equations for aerosol dynamics

作者: Marina A. Ferreira

DOI:

关键词: Distribution (mathematics)Constant (mathematics)Space (mathematics)Coagulation (water treatment)Mathematical analysisPower lawGenerating function (physics)ParticlePhysicsSchauder fixed point theorem

摘要: Binary coagulation is an important process in aerosol dynamics by which two particles merge to form a larger one. The distribution of particle sizes over time may be described the so-called Smoluchowski's equation. This integrodifferential equation exhibits complex non-local behaviour that strongly depends on rate considered. We first discuss well-posedness results for large class kernels as well existence and nonexistence stationary solutions presence source small particles. result uses Schauder fixed point theorem, relies flux formulation problem power law estimates decay with constant flux. then consider more general setting. constituted different chemicals, leads multi-component equations describing compositions. obtain explicit simplest case where kernel using generating function. Using approximation solution we observe mass localizes along straight line size space times sizes.

参考文章(30)
Philippe Laurençot, Stéphane Mischler, On coalescence equations and related models Modeling and Computational Methods for Kinetic Equations. pp. 321- 356 ,(2004) , 10.1007/978-0-8176-8200-2_11
Philippe Laurençot, Weak Compactness Techniques and Coagulation Equations arXiv: Analysis of PDEs. pp. 199- 253 ,(2015) , 10.1007/978-3-319-11322-7_5
F. P. da Costa, Mathematical Aspects of Coagulation-Fragmentation Equations CIM Series in Mathematical Sciences. pp. 83- 162 ,(2015) , 10.1007/978-3-319-16121-1_5
Menachem Elimelech, John Gregory, Xiadong Jia, None, Particle Deposition and Aggregation: Measurement, Modelling and Simulation ,(1995)
L Malyshkin, The Timescale of Runaway Stochastic Coagulation Icarus. ,vol. 150, pp. 314- 322 ,(2001) , 10.1006/ICAR.2001.6587
Reinhard Lang, Nguyen Xuan Xanh, Smoluchowski's theory of coagulation in colloids holds rigorously in the Boltzmann-Grad-limit Probability Theory and Related Fields. ,vol. 54, pp. 227- 280 ,(1980) , 10.1007/BF00534345
M. Escobedo, S. Mischler, B. Perthame, Gelation in coagulation and fragmentation models Communications in Mathematical Physics. ,vol. 231, pp. 157- 188 ,(2002) , 10.1007/S00220-002-0680-9
A. A. Lushnikov, M. Kulmala, Singular self-preserving regimes of coagulation processes. Physical Review E. ,vol. 65, pp. 041604- 041604 ,(2002) , 10.1103/PHYSREVE.65.041604