TY - JOUR
T1 - Total magnetic force on a ferrofluid droplet in microgravity
AU - Romero-Calvo, Álvaro
AU - Cano-Gómez, Gabriel
AU - Hermans, Tim H.J.
AU - Parrilla Benítez, Lidia
AU - Herrada Gutiérrez, Miguel Ángel
AU - Castro-Hernández, Elena
N1 - Accepted Author Manuscript
PY - 2020
Y1 - 2020
N2 - The formulation of the total force exerted by magnetic fields on ferrofluids has historically been a subject of intense debate and controversy. Although the theoretical foundations of this problem can now be considered to be well established, significant confusion still remains regarding the implementation of the associated expressions. However, the development of future applications in low-gravity environments is highly dependent on the correct modeling of this force. This paper presents a contextualized analysis of different proposed calculation procedures and validation in a space-like environment. Kinematic measurements of the movement of a ferrofluid droplet subjected to an inhomogeneous magnetic field in microgravity are compared with numerical predictions from a simplified physical model. Theoretical results are consistent with the assumptions of the model and show an excellent agreement with the experiment. The Kelvin force predictions are included in the discussion to exemplify how an incomplete modeling of the magnetic force leads to significant errors in the absence of gravity.
AB - The formulation of the total force exerted by magnetic fields on ferrofluids has historically been a subject of intense debate and controversy. Although the theoretical foundations of this problem can now be considered to be well established, significant confusion still remains regarding the implementation of the associated expressions. However, the development of future applications in low-gravity environments is highly dependent on the correct modeling of this force. This paper presents a contextualized analysis of different proposed calculation procedures and validation in a space-like environment. Kinematic measurements of the movement of a ferrofluid droplet subjected to an inhomogeneous magnetic field in microgravity are compared with numerical predictions from a simplified physical model. Theoretical results are consistent with the assumptions of the model and show an excellent agreement with the experiment. The Kelvin force predictions are included in the discussion to exemplify how an incomplete modeling of the magnetic force leads to significant errors in the absence of gravity.
KW - Ferrofluids
KW - Magnetic mass transfer
KW - Microgravity
KW - Space engineering
KW - Total magnetic force
UR - http://www.scopus.com/inward/record.url?scp=85083334655&partnerID=8YFLogxK
U2 - 10.1016/j.expthermflusci.2020.110124
DO - 10.1016/j.expthermflusci.2020.110124
M3 - Article
AN - SCOPUS:85083334655
SN - 0894-1777
VL - 117
JO - Experimental Thermal and Fluid Science
JF - Experimental Thermal and Fluid Science
M1 - 110124
ER -