Fig. 4From: Challenges of aortic valve tissue culture – maintenance of viability and extracellular matrix in the pulsatile dynamic microphysiological systemShear force calculation: A Navier Stokes derivation is used to compute the shear forces inside a circular tube that act on the AV-tissue specimen (τ≙wall shear stress, μ≙dynamic viscosity, d≙diameter, Q≙ flow rate)Back to article page