If a switch is set to -yes, then the convective contributions of temperature, etc. with respect to the mesh are skipped. The switch switch_0 is for the first primary unknown, etc.. A switch should be specified for each primary unknown. Default the switches are -no.
A geometrical linear analysis ('small deformations') is obtained by skipping the convective parts of the velocities with this control_skip_convective_part record, and keep the nodes fixed in space by using -no in the node_locate record.
A special format control_skip_convective_part index -all sets each switch to -yes.