Dispersion of CO2 in the water column

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Governing Eq.s of a Drop/Bubble inseawaterMomentum exchange Eq.dudtr 2ρsρc3urd ln( mc= ((1.0 − ) g − Cd) − u)rρcρs4DdtMass Eq.dddte=−1ρcd(3ur: slip velocityedρcdt+ 2k( Cde: equivalent diameter of bubbleCs: solubilityρ : densitys−C 0))DissolutionCO2BuoyancyDragKey Parameters:• k : mass transfer coefficient•Cs: CO2 solubility•Cd: drag coefficientShape (spherical ordeformed) & interfaces(solid, liquid, and gas towater)
Model validation: CO2 droplet indeep oceanDroplet Diameter (cm)Droplet velocity modeling vs data(Nikolaus et al. EST, 2008)1.000.800.600.400.200.00:Observation Data of Droplet A(P. Brewer et al):Observation Data of Droplet B(P. Brewer et al)10 25 40 55 70Elapsed Time (min)Modeling Prediction (Droplet A)Modeling Prediction (Droplet B)Droplet dissolution modeling vs data(Chen et al, JGR 2005 and field Exp data by P. Brewer et al, EST, 2003)
Page 1 and 2: Dispersion of CO2 in the watercolum
Page 3 and 4: Model Synthesis (WP2 + WP6.3 of QIC
Page 5 and 6: BackgroundSea surfaceDepthSediments
Page 7 and 8: Theory and methodology for two-phas
Page 9 and 10: Turbulent kinetic energy spectrum(c
Page 11: CO2 Phase diagram
Page 15 and 16: Model validation: Field Exp of dire
Page 17 and 18: Acoustic Detection (top) and modeli
Page 19 and 20: CO2 bubble (left) and CO2 enrichedw
Page 21 and 22: Effects of current, leakage depth,r
Page 23 and 24: Acknowledgements• Dr. Peter Brewe
Page 26 and 27: Lab. Exp on CO2/CO/CO2 solution atc
Page 28 and 29: LBM model of CO2 dispersion anddiss
Page 30 and 31: • Sept-10- Sept. 11:Preliminary S
Page 32 and 33: Bubble dynamics in sedimentsAn X-Ra
Page 34 and 35: I-3. Characteristics of CO2 droplet
Page 36 and 37: Natural CO2 plumes in the oceanCO2
Page 38 and 39: Bio-impact impact modeling test (de
Page 40 and 41: II-a-2. developed andundeveloped Dr
Page 42 and 43: II-a-9. Observation data of CO2 pha
Page 44 and 45: C[dd e]II-a-4.Cd for droplet/bubble
Page 46 and 47: II-a-10.10. Terminal distance and t
Page 48: Tasks of WP 2 of QUICS2.1 Experimen

Dispersion of CO2 in the water column

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