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In engineering, the Moody chart or Moody diagram (also Stanton diagram) is a graph in non-dimensional form that relates the Darcy–Weisbach friction factor f D, Reynolds number Re, and surface roughness for fully developed flow in a circular pipe. It can be used to predict pressure drop or flow rate down such a pipe.
Moody's Ratings, previously known as Moody's Investors Service and often referred to as Moody's, is the bond credit rating business of Moody's Corporation, representing the company's traditional line of business and its historical name. Moody's Ratings provides international financial research on bonds issued by commercial and government entities.
Before choosing a formula it is worth knowing that in the paper on the Moody chart, Moody stated the accuracy is about ±5% for smooth pipes and ±10% for rough pipes. If more than one formula is applicable in the flow regime under consideration, the choice of formula may be influenced by one or more of the following:
This is a list of countries by credit rating, showing long-term foreign currency credit ratings for sovereign bonds as reported by the largest three major credit rating agencies: Standard & Poor's, Fitch, and Moody's.
Moody’s on Monday evening downgraded 10 US banks and put the credit ratings of six others on review, an indication that the agency could also eventually downgrade those institutions.
Ford (NYSE:F) stock went into reverse as its bonds were labelled "junk" by a ratings agency. The decision by Moody's to downgrade Ford's credit rating is comparable to what happens to a car buyer ...
In an exclusive interview with Insider, Mark Zandi broke down his recession forecast for 2023, and how low homes prices could fall.
This was originally produced to describe the Moody chart, which plots the Darcy-Weisbach Friction factor against Reynolds number. The Darcy Weisbach Formula f D {\displaystyle f_{D}} , also called Moody friction factor, is 4 times the Fanning friction factor f {\displaystyle f} and so a factor of 1 4 {\displaystyle {\frac {1}{4}}} has been ...