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ABSTRACT
This study aims to investigate the influence of a conveyor angle on capillary flow during the wave soldering process. Finite volume-based simulation is utilized to study the capillary flow of molten solder. Molten solder filling through capillary action of a pin-through-hole (PTH) is considered at different conveyor angles (i.e., 0–10°). Two PTH positions, namely, center (r/R = 0.2) and offset (r/R = 0.6), are investigated. The effects of a conveyor angle on molten solder filling volume, time, pressure profile, and velocity vector are numerically analyzed.
Nomenclature
| Cp | = | specific heat (J/kg.K) |
| F | = | flow advancement parameter/volume fraction |
| n | = | normal plane |
| P | = | pressure (Pa) |
| Patm | = | atmospheric pressure (Pa) |
| ΔP | = | pressure difference (Pa) |
| R1, R2 | = | radii of curvature on solid surface (m) |
| T | = | local temperature (K) |
| u | = | fluid velocity component in x-direction (m/s) |
| v | = | fluid velocity component in y-direction (m/s) |
| w | = | fluid velocity component in z-direction (m/s) |
| x, y, z | = | Cartesian coordinates |
| η | = | viscosity (Pa.s) |
| ρ | = | density (kg/m3) |
| γ | = | liquid surface tension |
| γs | = | surface tension of solid (N/m) |
| γl | = | surface tension of liquid (N/m) |
| γls | = | surface tension between liquid and solid surface (N/m) |
| θ | = | contact angle (degree) |
Nomenclature
| Cp | = | specific heat (J/kg.K) |
| F | = | flow advancement parameter/volume fraction |
| n | = | normal plane |
| P | = | pressure (Pa) |
| Patm | = | atmospheric pressure (Pa) |
| ΔP | = | pressure difference (Pa) |
| R1, R2 | = | radii of curvature on solid surface (m) |
| T | = | local temperature (K) |
| u | = | fluid velocity component in x-direction (m/s) |
| v | = | fluid velocity component in y-direction (m/s) |
| w | = | fluid velocity component in z-direction (m/s) |
| x, y, z | = | Cartesian coordinates |
| η | = | viscosity (Pa.s) |
| ρ | = | density (kg/m3) |
| γ | = | liquid surface tension |
| γs | = | surface tension of solid (N/m) |
| γl | = | surface tension of liquid (N/m) |
| γls | = | surface tension between liquid and solid surface (N/m) |
| θ | = | contact angle (degree) |