variavel0=<b>João Nazareno Nonato Quaresma</b> - quaresma@ufpa.br Chemical Engineering Department/UFPA
<b>Cléber Lisboa Chaves</b> - clchaves@bol.com.br Chemical Engineering Department/UFPA
<b>João Alves de Lima</b> - jalima@dem.ufrn.br Mechanical Engineering Department/UFRN
<b>Emanuel Negrão Macêdo</b> - enegrao@ufpa.br Chemical Engineering Department/UFPA
<b>Luiz Mariano Pereira</b> - mariano@univap.br Research and Development Institute/UNIVAP
<b>Abstract.</b> A hybrid analytical-numerical approach based on the Generalized Integral Transform Technique (GITT) is employed to simulate thermally developing laminar flow of power-law non-Newtonian fluids inside isosceles triangular ducts. Constant wall temperature is used as thermal boundary condition. Reference results are established for quantities of practical interest (such as dimensionless average temperature and Nusselt numbers) within the thermal entry region for the range of flow behavior index 0.5 <= n <= 1.25 and different apex angles. Critical comparisons are made with results available in the literature for direct numerical and approximate approaches.
<b>Keywords.</b> isosceles triangular duct, power-law fluids, laminar forced convection, integral transform solution.