2020
Numerical simulation on optimizing flow field and flashing-light effect in jet-aerated tangential swirling-flow plate photobioreactor to improve microalgal growth
Cheng J, Lai X, Ye Q, Guo W, Zhou J. Numerical simulation on optimizing flow field and flashing-light effect in jet-aerated tangential swirling-flow plate photobioreactor to improve microalgal growth. Chemical Engineering Science 2020, 215: 115371. DOI: 10.1016/j.ces.2019.115371.Peer-Reviewed Original ResearchTurbulent kinetic energyDead zoneComputational fluid dynamics simulationsFluid dynamics simulationsFlashing-light effectsLight time ratioPlate photobioreactorTangential jetFlow fieldVertical vorticesSecondary vorticesNumerical simulationsKinetic energyMicroalgal growthPhotobioreactorVorticesCm2/s2SimulationsDynamics simulationsCO2 fixation rateTime ratioZoneJetBiomass dry weightFrequency
2019
Three-dimensional numerical simulation of light penetration in an optimized flow field composed of microalgae cells, carbon dioxide bubbles and culture medium
Guo W, Cheng J, Song Y, Liu S, Ali KA, Kumar S. Three-dimensional numerical simulation of light penetration in an optimized flow field composed of microalgae cells, carbon dioxide bubbles and culture medium. Bioresource Technology 2019, 292: 121979. PMID: 31445241, DOI: 10.1016/j.biortech.2019.121979.Peer-Reviewed Original ResearchConceptsOptimized flow fieldFlow fieldNumerical simulationsThree-dimensional numerical simulationsComputational fluid dynamicsBubble volume fractionMicroalgae cellsCarbon dioxide bubblesBubble diameterConic bafflesFluid dynamicsSolution depthVolume fractionRaceway pondsMicroalgae cell concentrationIncident irradiationBiomass growth rateMicroalgae growthBubblesLight penetrationSimulationsPenetrationBafflesSelf-rotary propellers with clockwise/counterclockwise blades create spiral flow fields to improve mass transfer and promote microalgae growth
Kumar S, Cheng J, Guo W, Ali KA, Song Y. Self-rotary propellers with clockwise/counterclockwise blades create spiral flow fields to improve mass transfer and promote microalgae growth. Bioresource Technology 2019, 286: 121384. PMID: 31048263, DOI: 10.1016/j.biortech.2019.121384.Peer-Reviewed Original ResearchConceptsSpiral flow fieldFlow fieldGas-liquid mixingRaceway pondsMass transfer coefficientWall shear stressTransfer coefficientPropeller diameterOpen raceway pondsMass transferSpiral flowPropellerShear stressRotational flowBladesExternal powerA. platensis biomassMicroalgae growthFlowMicroalgal growthHelix pitchDiameterMixingPitchField
2018
Enhancing vorticity magnitude of turbulent flow to promote photochemical efficiency and trichome helix pitch of Arthrospira platensis in a raceway pond with conic baffles
Cheng J, Guo W, Song Y, Kumar S, Ameer Ali K, Zhou J. Enhancing vorticity magnitude of turbulent flow to promote photochemical efficiency and trichome helix pitch of Arthrospira platensis in a raceway pond with conic baffles. Bioresource Technology 2018, 269: 1-8. PMID: 30144753, DOI: 10.1016/j.biortech.2018.08.058.Peer-Reviewed Original ResearchConceptsConic bafflesVorticity magnitudeTurbulent flow fieldTurbulent kinetic energyComputational fluid dynamicsRaceway pondsTurbulent flowFlow fieldDoppler velocimeterFluid dynamicsVortex mechanismBiomass productivityKinetic energyHigh biomass productivityHelix pitchBafflesEnhanced biomass productivityArthrospira platensisPitchVelocimeterEfficiencyMicroscope
2017
Alternatively permutated conic baffles generate vortex flow field to improve microalgal productivity in a raceway pond
Cheng J, Guo W, Cai C, Ye Q, Zhou J. Alternatively permutated conic baffles generate vortex flow field to improve microalgal productivity in a raceway pond. Bioresource Technology 2017, 249: 212-218. PMID: 29045924, DOI: 10.1016/j.biortech.2017.10.031.Peer-Reviewed Original ResearchConceptsConic bafflesVorticity magnitudeRaceway pondsVortex flowBubble generation timeBubble residence timeVortex flow fieldMass transfer coefficientTransfer coefficientFlow fieldClockwise vortexMass transferVertical cross sectionBafflesHorizontal cross sectionPerpendicular velocityPure COResidence timeMicroalgal productivityFlowRelative spacingVelocityBiomass productivityMain streamCross sections