Figure 1.

Influence of scaffold properties on flow velocity. (a) For a given flow rate, the fluid velocity (v) is inversely proportional to the total open cross‐section (S) it is flowing through, represented in yellow cross‐hatches. (b) The average open cross‐sectional surface (S) is determined by the total cross‐sectional area of the scaffold (A) and its porosity (p). A and S are successively represented in cross‐hatches. (c) Scaffolds of different sizes and porosities have different open cross‐sectional surfaces, thus generating different velocities for the same flowrate. (d) Average circulation velocity in mm/s for a circular scaffold perfused at a flow rate of 1 ml/min for different scaffold diameters (D in mm) and values of porosity (p), calculated using Equation (3)