TURBULENCE MODULATION MEASUREMENTS IN A CHARGED MONODISPERSED DROPLET STREAM
| Autor: | Tung Hsiao Tsai, Wei Hsiang Lai, Wei Fu Lu, Keh Chin Chang |
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| Rok vydání: | 2009 |
| Předmět: |
General Chemical Engineering
Ensemble averaging Near and far field Electron Molecular physics Flow measurement Physics::Fluid Dynamics Coulomb's law symbols.namesake Planar Optics Anemometer Physics::Atomic and Molecular Clusters Droplet size Physics Coalescence (physics) business.industry Turbulence Chemistry Particle-laden flows General Chemistry Mechanics Breakup Rigid body Turbulence kinetic energy symbols Electrohydrodynamics business |
| Zdroj: | Chemical Engineering Communications. 197:158-168 |
| ISSN: | 1563-5201 0098-6445 |
| DOI: | 10.1080/00986440902935754 |
| Popis: | As reported in the study of Chang et al., the modulation of the carrier‐phase turbulence, that is, the effect of the presence of dispersed phase on the turbulence structure, is heavily dependent on the term of (〈ugi′upi′〉‐2k), where 〈 〉 denotes the ensemble averaging quantity; k is the turbulent kinetic energy, ugi′ and upi′ are the i‐th component of fluctuating velocities of carrier and dispersed phases, respectively. Nevertheless, very few experimental data of 〈ugi′upi′〉 can be found in the literature. Wang and Huang made the 〈ugi′upi′〉 measurements by using a phase Doppler anemometer in a planar mixing‐layer flow leaded with polydispersed spray. However, the accuracy of the measured 〈ugi′upi′〉 data made by Wang and Huang was in doubt according to the comparison results with the model predictions in the study of Chang et al.. Prevost et al. preformed the 〈ugi′upi′〉 measurements using a phase Doppler anemometer in the far field of a polydispersed particle‐laden jet. Due to unavailability of the thorough ... |
| Databáze: | OpenAIRE |
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