def CFMtom3sec(VCFM):
    """
    Convertie le debit volumique en CFM vers m3/sec
        Conversion: 2118.8799727597 CFM = 1 m3/sec
    :param VCFM: Debit volumique [CFM]
    :return Vm3sec: Debit volumique [m3/sec]
    """
    Vm3sec = VCFM / 2118.8799727597
    return Vm3sec