Rohsenow correlation

Bjorge, R. W., G. R. Hall, and W. M. Rohsenow Correlations of Forced Convection Boiling Heat Transfer Data, Int. J. Heat Mass Transfer, vol. 25, p. 753, 1982. 

A Model (the Rohsenow Correlation). Experimental studies show that the relation... 

In terms of this result, the Rohsenow correlation for nucleate pool boiling becomes... 

The exponent n has a value of unity for water and a value of 1.7 for other fluids. Although the Rohsenow correlation explicitly recognizes that, in reality, the surface has a considerable effect, it must be admitted that, in practice, the values of CSF are rarely known and have to be guessed. Where CSF is not known, a value of 0.013 is recommended as a first approximation. 

Low pressure fiow film boiling Dougall and Rohsenow correlation... 

Mikic and Rohsenow present another hoiling correlation for pool boiling, which includes the effects of the heating surface characteristics. 

Mikic, B. B. and W. M. Rohsenow, A New Correlation of Pool Boiling Data Including the Effect of Heating Surface Characteristics, ASME four. Heat Trans., V. 91, p. 245, May (1969). 

Rohsenow, W. and P. Griffith, Correlation of Maximum Heat-Elux Data for Boiling of Saturated Liquids, presented at ASME Meeting, Louisville, Ky., March (1955). 

Rohsenow, W. H., A Method of Correlating Heat Transfer Data for Surface Boiling of Liquids, Heat Transfer Div. ASME, Atlantic City, NJ. Meeting Nov. 25, (1951) Paper No. 51-A-llO. 

It is seen that the empirical correlation by Bergles and Rohsenow (1964) agrees fairly well with prediction of theoretical analysis based on the Hsu (1962) model. Empirical correlations by Jens and Lottes (1951) and by Thom et al. (1965) show that wall superheat weakly depends on pressure. 

To take into account that the constant Cd in Eq. (2-59) is really dependent to a significant extent on the boiling pressure, Cole and Rohsenow (1969) proposed a modified correlation that also appears to work quite well for a large variety of ordinary liquids for saturate boiling ... 

Rohsenow s early correlation Using the form of correlation shown in Eq. (2-78), and assuming that the convection mechanism associated with bubble liftoff is of prime importance, Rohsenow (1952) found empirically, with data obtained from a 0.024-in. (0.6-mm) platinum wire in degassed distilled water, that... 

Mikic-Rohsenow s correlation Mikic and Rohsenow (1969) therefore proposed a new correlation, based on the transient conduction to the superheated layer mechanism described in Section 2.4.1.2 ... 

Hence, Ub is a function of UbL, Db, and fluid properties. The equivalent diameter of the vapor blanket, Db, can be obtained from the correlation for the bubble departure diameter (Cole and Rohsenow, 1969). To calculate the liquid velocity, UbL,... 

Cole, R., and W. R. Rohsenow, 1969, Correlation of Bubble Departure Diameters for Boiling of Saturated Liquids, AIChE Chem. Eng. Prog. Symp. Ser. 6J(92) 211. (2)... 

A test of Eq. (21), or (20), is shown in Fig. 14. The same maximum heat-flux data of Cichelli and Bonilla (C2) for three organic liquids which produced three separate lines by Rohsenow s correlation give a single line on the Forster-Zuber plot. The data of Kazakova (Kl) for water boiling at pressures varying from 10 to 80% of the critical pressure also fit the line nicely. 

In addition to the equations of Rohsenow and of Forster and Zuber, which are the most theoretical equations now available, there exist many equations which are simply empirical correlations. Little pretense is made that these additional equations are defensible on theoretical grounds beyond simple dimensional analysis. A few of these are given below. 

The result was a smooth curve. Rohsenow and Griffith (R12) have correlated the same data to obtain a straight line. 

Rohsenow [5] correlated experimental data for nucleate pool boiling with the following relation ... 

Correlation of pool-boiling data by Eq. (9-33), from Rohsenow... 

The first eigenvalue is accurately correlated by (Yovanovich, Chap. 3 of Rohsenow, Hartnett, and Cho, Handbook of Heat Transfer, 3d ed., McGraw-Hill, 1998, p. 3.25)... 

W. Rohsenow. A method of correlation heat-transfer data for surface boiling of liquids . Transactions of the ASME, 74, pp. 969-976 (1952). 

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