  Based on the well-calibrated IBUU transport model, we have studied the
dynamical effect of incorporating rigorous angular momentum conservation in
each collision of particles with homework setups. The constraint of the
rigorous angular momentum conservation requires in-plane collisions and side
jumps of particles after their collision. Since the option is not unique, we
have compared two typical prescriptions with the original one. While the
results depend quantitatively on the choice of the prescription, we found that
the angular momentum conservation generally reduces local density fluctuations
and thus the collision rate, and may have some influence on the density
evolution, the collective flow, and even the pion production in transport
simulations of intermediate-energy heavy-ion collisions.
