from ansys.mapdl.core import launch_mapdl

def run_simulation(cad_file):
    mapdl = launch_mapdl()
    # Assuming input parameters are pre-defined in templates
    input_script = "/mnt/data/templates/simulation_template.inp"
    mapdl.input_file(input_script)
    results = mapdl.solve()
    mapdl.exit()
    return f"Simulation completed successfully. Results: {results.summary}"