The circulation of the blood from the right ventricle to the left auricle of the heart via lungs is called pulmonary circulation.
In this process the right ventricle pumps deocygenated blood to the lungs through pulmonary artery for purification. The oxygenated blood from the lungs is brought to the left auricle of heart by four pulmonary veins.
Right ventricle → Pulmonary artery → Lungs → Pulmonary veins → Left auricle