In the home, water hammer may occur when a dishwasher, washing machine, or toilet shuts off water flow. The result may be heard as a loud bang, repetitive banging (as the shock wave travels back and forth in the plumbing system), or as some shuddering.o for a valve closing instantaneously, the maximum magnitude of the water hammer pulse is: where Î´ P is the magnitude of the pressure wave (Pa), Ï is the density of the fluid (kgm â3), a0 is the speed of sound in the fluid (ms â1), and Î´ v is the change in the fluid's velocity (ms â1).
CHKD - Children's Hospital of The King's Daughters, All Acronyms, viewed January 26, 2018, <https://www.allacronyms.com/CHKD/Children%27s_Hospital_of_The_King%27s_Daughters> mla All Acronyms.
Definition of CHD. 1  Take the Heart Disease Quiz!  CHD: Congenital heart disease, a malformation of the heart or the large blood vessels near the heart. Congenital heart disease is the most frequent form of major birth defects in newborns affecting close to 1% of newborn babies (8 per 1,000). There are a great many types of congenital heart disease.