Laminar flow yana nufin wani nau'in kwararar ruwa wanda saurin da alkiblar barbashin ruwan ke da tsari da kyau da santsi, ba tare da tashin hankali ko cakuduwa ba. A cikin kwararar laminar, ruwan yana motsawa daban-daban, layi daya, ko "lamina," tare da kowane Layer yana motsawa da sauri daban-daban amma tare da ƙaramin cakuduwa tsakanin yadudduka. Irin wannan nau'in kwarara yana da ƙarancin lambar Reynolds kuma ana yawan ganin shi a cikin ƙananan ruwa masu ɗanɗano da ke gudana a ƙananan gudu, kamar ruwa yana gudana ta cikin bututu mai santsi ko iska yana gudana akan ƙasa mai lebur.