Modeling the radiative, thermal and chemical microenvironment of 3D scanned corals
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Modeling the radiative, thermal and chemical microenvironment of 3D scanned corals. / Murthy, Swathi; Picioreanu, Cristian; Kühl, Michael.
In: Frontiers in Marine Science, Vol. 10, 1160208, 2023.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Modeling the radiative, thermal and chemical microenvironment of 3D scanned corals
AU - Murthy, Swathi
AU - Picioreanu, Cristian
AU - Kühl, Michael
N1 - Publisher Copyright: Copyright © 2023 Murthy, Picioreanu and Kühl.
PY - 2023
Y1 - 2023
N2 - Reef building corals are efficient biological collectors of solar radiation and consist of a thin stratified tissue layer spread over a light scattering calcium carbonate skeleton surface that together construct complex three dimensional (3D) colony structures forming the foundation of coral reefs. They exhibit a vast diversity of structural forms to maximize photosynthesis of their dinoflagellate endosymbionts (Symbiodiniaceae), while simultaneously minimizing photodamage, offer resistance to hydrodynamic stress, reduce attack by predators and increase prey capture and heterotrophic feeding. The symbiosis takes place in the presence of dynamic gradients of light, temperature and chemical species that are affected by the interaction of incident irradiance and water flow with the coral colony. We developed a multiphysics modelling approach to simulate the microscale spatial distribution of light, temperature and O2 in a coral fragment with its morphology determined by 3D scanning techniques. Model results compared well with spatial measurements of light, O2 and temperature under similar flow and light conditions. The model enabled us to infer the effect of coral morphology and light scattering in tissue and skeleton on the internal light environment experienced by the endosymbionts, as well as the combined contribution of light, water flow and ciliary movement on O2 and temperature distributions in the coral.
AB - Reef building corals are efficient biological collectors of solar radiation and consist of a thin stratified tissue layer spread over a light scattering calcium carbonate skeleton surface that together construct complex three dimensional (3D) colony structures forming the foundation of coral reefs. They exhibit a vast diversity of structural forms to maximize photosynthesis of their dinoflagellate endosymbionts (Symbiodiniaceae), while simultaneously minimizing photodamage, offer resistance to hydrodynamic stress, reduce attack by predators and increase prey capture and heterotrophic feeding. The symbiosis takes place in the presence of dynamic gradients of light, temperature and chemical species that are affected by the interaction of incident irradiance and water flow with the coral colony. We developed a multiphysics modelling approach to simulate the microscale spatial distribution of light, temperature and O2 in a coral fragment with its morphology determined by 3D scanning techniques. Model results compared well with spatial measurements of light, O2 and temperature under similar flow and light conditions. The model enabled us to infer the effect of coral morphology and light scattering in tissue and skeleton on the internal light environment experienced by the endosymbionts, as well as the combined contribution of light, water flow and ciliary movement on O2 and temperature distributions in the coral.
KW - heat transfer
KW - mass transfer
KW - microenvironment
KW - numerical simulation
KW - radiative transfer
U2 - 10.3389/fmars.2023.1160208
DO - 10.3389/fmars.2023.1160208
M3 - Journal article
AN - SCOPUS:85161044814
VL - 10
JO - Frontiers in Marine Science
JF - Frontiers in Marine Science
SN - 2296-7745
M1 - 1160208
ER -
ID: 356971579