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
Numerical simulation on promoting light/dark cycle frequency to improve microalgae growth in photobioreactor with serial lantern-shaped draft tube
Ye Q, Cheng J, Guo W, Xu J, Li H, Zhou J. Numerical simulation on promoting light/dark cycle frequency to improve microalgae growth in photobioreactor with serial lantern-shaped draft tube. Bioresource Technology 2018, 266: 89-96. PMID: 29957295, DOI: 10.1016/j.biortech.2018.06.055.Peer-Reviewed Original ResearchConceptsLight/dark cycle frequencyDark cycle frequencyTurbulent kinetic energyDraft tubeAverage turbulent kinetic energyComputational fluid dynamicsFlashing-light effectsKinetic energyLight time ratioMicroalgal biomass yieldCycle frequencyFlow regionFluid dynamicsAxial velocityNumerical simulationsMicroalgal solutionColumn photobioreactorMicroalgae growthVelocityAverage radial velocityRadial velocityPhotobioreactorSixfold improvementTubeEnergy